]> 2009/04/07 OpenCyc Knowledge Base Copyright© 2001-2009 Cycorp, Inc., http://www.cyc.com/, Austin, TX, USA This file contains an OWL representation of information contained in the OpenCyc Knowledge Base. The content of this OWL file is licensed under the Creative Commons Attribution 3.0 license whose text can be found at http://creativecommons.org/licenses/by/3.0/legalcode. The content of this OWL file, including the OpenCyc content it represents, constitutes the "Work" referred to in the Creative Commons license. The terms of this license equally apply to, without limitation, renamings and other logically equivalent reformulations of the content of this OWL file (or portions thereof) in any natural or formal language, as well as to derivations of this content or inclusion of it in other ontologies. Mappings between OpenCyc terms and Wikipedia article names provided by Olena Medelyan and Catherine Legg, University of Waikato, NZ under a Creative Commons Attribution 3.0 license. externalID A unique, language-neutral, variable-sized identifier for a concept that can be used to refer unambiguously to that concept across OWL exports or across Cyc inference engines. label A natural-language representation for a concept that is both human readable and readable by the Cyc inference engine. These terms are not guaranteed to refer to the same concept across time but are guaranteed to be consistent within a particular OWL export. Use 'cycAnnot:externalID' for unambiguously referring to a concept across OWL exports or across Cyc inference engines. Mx4rvVil7JwpEbGdrcN5Y29ycA LightingDevice <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> has the <a href="http://sw.opencyc.org/2009/04/07/concept/en/primaryFunction" class="cyc_term">primaryFunction</a> of providing light. The light provided may be provided in different ways and for different specialized purposes. For example, it may be for general illumination of a fixed area (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Candle" class="cyc_term">Candle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Lantern" class="cyc_term">Lantern</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricLamp" class="cyc_term">ElectricLamp</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a>); or it may be for specially directed illumination (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/AutomotiveLight" class="cyc_term">AutomotiveLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Flashlight" class="cyc_term">Flashlight</a>); or it may be for use in a signal or sign (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrafficLight" class="cyc_term">TrafficLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndicatorLight" class="cyc_term">IndicatorLight</a>); or it may be for some other special purposes (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/StrobeLight" class="cyc_term">StrobeLight</a>). source of illumination lamp lamps lights light sources of illumination http://www.w3.org/2006/03/wn/wn20/instances/synset-lamp-noun-1 http://www.w3.org/2006/03/wn/wn20/instances/synset-source_of_illumination-noun-1 ElectricalLightingDevice Devices that provide light by transforming electrical current into light energy. lamp The set of lighting devices which consist of a transparent or translucent case enclosing a light and protecting it from wind, rain, etc.; often used outdoors on patios or for camping trips. Lantern lantern candle Candle The collection of pieces of wax, tallow, etc. with embedded wicks designed to be burned to give light. Modern candles are often long and slender. The whole of a candle burns up, unlike a torch, which remains after its fuel has been consumed by the fire. Streetlight streetlight The collection of all streetlights. A type of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricalLightingDevice" class="cyc_term">ElectricalLightingDevice</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/FixedObstacle" class="cyc_term">FixedObstacle</a>. The collection <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a> is an <a href="http://sw.opencyc.org/2009/04/07/concept/en/ArtifactTypeByGenericCategory" class="cyc_term">ArtifactTypeByGenericCategory</a> and a <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointObjectType" class="cyc_term">SpatiallyDisjointObjectType</a>. The collection of all <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a>s mounted on the exterior of an object. For example, many buildings have lights that illuminate the approach. Vehicles often have exterior lights to help the driver see, and to help others see the vehicle. ExteriorLightingDevice exterior light Quoted Isa A binary <a href="http://sw.opencyc.org/2009/04/07/concept/en/MetaLanguagePredicate" class="cyc_term">MetaLanguagePredicate</a> (q.v.) that relates CycL expressions to the <a href="http://sw.opencyc.org/2009/04/07/concept/en/SubLExpressionType" class="cyc_term">SubLExpressionType</a>s (q.v.) of which they are instances. <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> is thus like a restricted version of <a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> (q.v.), but with one important difference: the first argument-place of <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> is "implicitly quoted" (see <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedArgument" class="cyc_term">quotedArgument</a>). So a ground atomic sentence of the form <code>(<a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> THING EXPR-TYPE)</code> does not mean that <code>THING</code> itself is an instance of <code>EXPR-TYPE</code>. Rather, such a sentence is partly self-referential, and means that the particular CycL expression appearing in the sentence's own first argument-position is an instance of <code>EXPR-TYPE</code>. Thus, <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> provides a convenient shorthand for stating certain things that would otherwise require explicit quotation (or some other device for naming expressions). This is better illustrated with a specific example. Suppose we wish to state that the CycL constant <code><a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a></code> is an instance of the CycL expression type #$PublicConstant. We cannot express this with the straightforward <a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> sentence <code>(<a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a> #$PublicConstant)</code>, as that states the falsehood that the IndianOcean itself -- which is not a constant but a body of water -- is a public constant. But we can express precisely what we want like this: <pre> (<a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a> #$PublicConstant) . </pre> Now <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> is a <a href="http://sw.opencyc.org/2009/04/07/concept/en/MacroRelation" class="cyc_term">MacroRelation</a> (q.v.), and by its <a href="http://sw.opencyc.org/2009/04/07/concept/en/expansion" class="cyc_term">expansion</a> any given <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> sentence is equivalent to some <a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> sentence with an explicitly quoted first argument. The sentence displayed above turns out to be equivalent to: <pre> (<a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> (<a href="http://sw.opencyc.org/2009/04/07/concept/en/Quote" class="cyc_term">Quote</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a>) #$PublicConstant). </pre> But the <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> version has two related practical advantages over the <a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> version. First, the former is syntactically simpler than the latter. Second, the simpler syntax of the former makes it easier to browse in the Knowedge Base: while the <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> version is conveniently indexed under the KB Browser page for the constant <code><a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a></code>, the <a href="http://sw.opencyc.org/2009/04/07/concept/en/isa" class="cyc_term">isa</a> version would apparently be indexed under a separate, brand new page for the term <code>(<a href="http://sw.opencyc.org/2009/04/07/concept/en/Quote" class="cyc_term">Quote</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndianOcean" class="cyc_term">IndianOcean</a>)</code>. Generalizing the point, <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a> lets us avoid having potentially to double the number of pages currently in the browser. For the semantically more complicated (but rarely encountered) case in which <a href="http://sw.opencyc.org/2009/04/07/concept/en/quotedIsa" class="cyc_term">quotedIsa</a>'s first argument-place is filled with an open expression, see the accompanying #$cyclistNotes. quotedIsa seeAlsoURI See Also URI <code>(<a href="http://sw.opencyc.org/2009/04/07/concept/en/seeAlsoURI" class="cyc_term">seeAlsoURI</a> THING URI)</code> means that a description of the resource identified by URI is likely to contain information pertinent to THING. This predicate is roughly equivalent to rdfs:seeAlso. LightingDevice <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> has the <a href="http://sw.opencyc.org/2009/04/07/concept/en/primaryFunction" class="cyc_term">primaryFunction</a> of providing light. The light provided may be provided in different ways and for different specialized purposes. For example, it may be for general illumination of a fixed area (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Candle" class="cyc_term">Candle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Lantern" class="cyc_term">Lantern</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricLamp" class="cyc_term">ElectricLamp</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a>); or it may be for specially directed illumination (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/AutomotiveLight" class="cyc_term">AutomotiveLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Flashlight" class="cyc_term">Flashlight</a>); or it may be for use in a signal or sign (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrafficLight" class="cyc_term">TrafficLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndicatorLight" class="cyc_term">IndicatorLight</a>); or it may be for some other special purposes (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/StrobeLight" class="cyc_term">StrobeLight</a>). source of illumination A collection of collections; a subcollection of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ArtifactTypeByGenericCategory" class="cyc_term">ArtifactTypeByGenericCategory</a>. Instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ArtifactTypeByFunction" class="cyc_term">ArtifactTypeByFunction</a> are mutually unique with respect to the full set of the primary intended uses of their instances. Examples include <a href="http://sw.opencyc.org/2009/04/07/concept/en/DessertFood" class="cyc_term">DessertFood</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Sofa_PieceOfFurniture" class="cyc_term">Sofa_PieceOfFurniture</a>. Counter-examples include <a href="http://sw.opencyc.org/2009/04/07/concept/en/FountainPen" class="cyc_term">FountainPen</a> (which has the same primary function as its genls, <a href="http://sw.opencyc.org/2009/04/07/concept/en/WritingPen" class="cyc_term">WritingPen</a>) and <a href="http://sw.opencyc.org/2009/04/07/concept/en/FurniturePiece" class="cyc_term">FurniturePiece</a> (specs of which have different primary uses). There may be cases where two instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ArtifactTypeByFunction" class="cyc_term">ArtifactTypeByFunction</a> (PROD1 and PROD2) are related by (<a href="http://sw.opencyc.org/2009/04/07/concept/en/genls" class="cyc_term">genls</a> PROD1 PROD2); but this will only happen in cases where instances of PROD1 have some additional primary function(s) to those of PROD2. For example, the collections <a href="http://sw.opencyc.org/2009/04/07/concept/en/Sofa_PieceOfFurniture" class="cyc_term">Sofa_PieceOfFurniture</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/SofaBed" class="cyc_term">SofaBed</a> are both instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ArtifactTypeByFunction" class="cyc_term">ArtifactTypeByFunction</a>, and (<a href="http://sw.opencyc.org/2009/04/07/concept/en/genls" class="cyc_term">genls</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/SofaBed" class="cyc_term">SofaBed</a> <a href="http://sw.opencyc.org/2009/04/07/concept/en/Sofa_PieceOfFurniture" class="cyc_term">Sofa_PieceOfFurniture</a>) is true. ArtifactTypeByFunction artifact type by function prettyString Pretty String (<a href="http://sw.opencyc.org/2009/04/07/concept/en/prettyString" class="cyc_term">prettyString</a> TERM STRING) means that STRING is the English word or expression (sequence of words) commonly used to refer to TERM. The predicate <a href="http://sw.opencyc.org/2009/04/07/concept/en/prettyString" class="cyc_term">prettyString</a> is used by the code which generates CycL to English paraphrases, but its applicability is not restricted to this use. powered device A specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PhysicalDevice" class="cyc_term">PhysicalDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a> is a device that requires some power input in order to perform its intended function(s). The power supplied might be muscle power, kinetic energy, electricity, fuel-generated, and so on. Note that <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/NonPoweredDevice" class="cyc_term">NonPoweredDevice</a> partition the collection <a href="http://sw.opencyc.org/2009/04/07/concept/en/PhysicalDevice" class="cyc_term">PhysicalDevice</a>. PoweredDevice word net workflow constant not fully reviewed WordNetWorkflowConstant-NotFullyReviewed The collection of all <a href="http://sw.opencyc.org/2009/04/07/concept/en/CycLConstant" class="cyc_term">CycLConstant</a>s created from the import of concepts from <a href="http://sw.opencyc.org/2009/04/07/concept/en/WordNet_Version2_0" class="cyc_term">WordNet_Version2_0</a> that have not yet been fully reviewed by a <a href="http://sw.opencyc.org/2009/04/07/concept/en/HumanCyclist" class="cyc_term">HumanCyclist</a>. LightingDevice <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> has the <a href="http://sw.opencyc.org/2009/04/07/concept/en/primaryFunction" class="cyc_term">primaryFunction</a> of providing light. The light provided may be provided in different ways and for different specialized purposes. For example, it may be for general illumination of a fixed area (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Candle" class="cyc_term">Candle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Lantern" class="cyc_term">Lantern</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricLamp" class="cyc_term">ElectricLamp</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a>); or it may be for specially directed illumination (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/AutomotiveLight" class="cyc_term">AutomotiveLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Flashlight" class="cyc_term">Flashlight</a>); or it may be for use in a signal or sign (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrafficLight" class="cyc_term">TrafficLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndicatorLight" class="cyc_term">IndicatorLight</a>); or it may be for some other special purposes (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/StrobeLight" class="cyc_term">StrobeLight</a>). source of illumination An instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ObjectType" class="cyc_term">ObjectType</a>, and a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Artifact_Generic" class="cyc_term">Artifact_Generic</a>. <a href="http://sw.opencyc.org/2009/04/07/concept/en/Artifact_NonAgentive" class="cyc_term">Artifact_NonAgentive</a> is the collection of all artifacts that are _not_ agents (i.e., that are _not_ instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Agent_Generic" class="cyc_term">Agent_Generic</a>). Specializations of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Artifact_NonAgentive" class="cyc_term">Artifact_NonAgentive</a> include <a href="http://sw.opencyc.org/2009/04/07/concept/en/Bicycle" class="cyc_term">Bicycle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Pants" class="cyc_term">Pants</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Canal" class="cyc_term">Canal</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/FoodUtensil" class="cyc_term">FoodUtensil</a>. Artifact-NonAgentive non-agentive artifact A collection of collections. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ExistingObjectType" class="cyc_term">ExistingObjectType</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a> (q.v.). Moreover, each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ExistingObjectType" class="cyc_term">ExistingObjectType</a> is a collection that is temporally stuff-like (see <a href="http://sw.opencyc.org/2009/04/07/concept/en/TemporalStuffType" class="cyc_term">TemporalStuffType</a>) but physically-spatially object-like (see <a href="http://sw.opencyc.org/2009/04/07/concept/en/ObjectType" class="cyc_term">ObjectType</a>) -- i.e. object-like with respect to some physical-spatial part-whole predicate (e.g. some specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/properPhysicalDecompositions" class="cyc_term">properPhysicalDecompositions</a>). Consider the collection <a href="http://sw.opencyc.org/2009/04/07/concept/en/BookCopy" class="cyc_term">BookCopy</a>. <a href="http://sw.opencyc.org/2009/04/07/concept/en/BookCopy" class="cyc_term">BookCopy</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Further, <a href="http://sw.opencyc.org/2009/04/07/concept/en/BookCopy" class="cyc_term">BookCopy</a> is temporally stuff-like: any one of the <a href="http://sw.opencyc.org/2009/04/07/concept/en/timeSlices" class="cyc_term">timeSlices</a> of a given copy <code>COPY</code> of (say) "Moby Dick" is still a copy of "Moby Dick". (Most collections of tangible objects are temporally stuff-like in this way.) But <a href="http://sw.opencyc.org/2009/04/07/concept/en/BookCopy" class="cyc_term">BookCopy</a> is spatially object-like: if we take a scalpel and slice <code>COPY</code> into ten pieces, each piece is not a copy of "Moby Dick". So <a href="http://sw.opencyc.org/2009/04/07/concept/en/BookCopy" class="cyc_term">BookCopy</a> is an instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ExistingObjectType" class="cyc_term">ExistingObjectType</a>. See also <a href="http://sw.opencyc.org/2009/04/07/concept/en/StuffType" class="cyc_term">StuffType</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/ExistingStuffType" class="cyc_term">ExistingStuffType</a>. ExistingObjectType type of object type of object whose instances do not physically overlap SpatiallyDisjointObjectType A collection of collections and a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/ObjectType" class="cyc_term">ObjectType</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointObjectType" class="cyc_term">SpatiallyDisjointObjectType</a> is a collection C of spatial things (see <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatialThing" class="cyc_term">SpatialThing</a>), where each of the spatial things in C is spatially disjoint with the other spatial things in C. For example, the collection <a href="http://sw.opencyc.org/2009/04/07/concept/en/Dog" class="cyc_term">Dog</a> is an instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointObjectType" class="cyc_term">SpatiallyDisjointObjectType</a>, since dogs do not spatially overlap. Even pregnant dogs do not spatially overlap the pups they bear; rather, pregnant dogs contain their unborn pups. Other instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointObjectType" class="cyc_term">SpatiallyDisjointObjectType</a> include <a href="http://sw.opencyc.org/2009/04/07/concept/en/LatitudeLine" class="cyc_term">LatitudeLine</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/CompactDisc_Audio" class="cyc_term">CompactDisc_Audio</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/PlanetaryBody" class="cyc_term">PlanetaryBody</a>. An important specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointObjectType" class="cyc_term">SpatiallyDisjointObjectType</a> is <a href="http://sw.opencyc.org/2009/04/07/concept/en/SpatiallyDisjointRegionType" class="cyc_term">SpatiallyDisjointRegionType</a> (a collection of specializations of <a href="http://sw.opencyc.org/2009/04/07/concept/en/GeographicalRegion" class="cyc_term">GeographicalRegion</a>, such as <a href="http://sw.opencyc.org/2009/04/07/concept/en/City" class="cyc_term">City</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrueContinent" class="cyc_term">TrueContinent</a>). LightingDevice <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> has the <a href="http://sw.opencyc.org/2009/04/07/concept/en/primaryFunction" class="cyc_term">primaryFunction</a> of providing light. The light provided may be provided in different ways and for different specialized purposes. For example, it may be for general illumination of a fixed area (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Candle" class="cyc_term">Candle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Lantern" class="cyc_term">Lantern</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricLamp" class="cyc_term">ElectricLamp</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a>); or it may be for specially directed illumination (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/AutomotiveLight" class="cyc_term">AutomotiveLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Flashlight" class="cyc_term">Flashlight</a>); or it may be for use in a signal or sign (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrafficLight" class="cyc_term">TrafficLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndicatorLight" class="cyc_term">IndicatorLight</a>); or it may be for some other special purposes (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/StrobeLight" class="cyc_term">StrobeLight</a>). source of illumination specializations of physical device device topic SpecializationsOfPhysicalDevice-Device-Topic device that is not a weapon (CollectionDifferenceFn PhysicalDevice Weapon) LightingDevice <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> is a specialization of <a href="http://sw.opencyc.org/2009/04/07/concept/en/PoweredDevice" class="cyc_term">PoweredDevice</a>. Each instance of <a href="http://sw.opencyc.org/2009/04/07/concept/en/LightingDevice" class="cyc_term">LightingDevice</a> has the <a href="http://sw.opencyc.org/2009/04/07/concept/en/primaryFunction" class="cyc_term">primaryFunction</a> of providing light. The light provided may be provided in different ways and for different specialized purposes. For example, it may be for general illumination of a fixed area (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/Candle" class="cyc_term">Candle</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/Lantern" class="cyc_term">Lantern</a>, <a href="http://sw.opencyc.org/2009/04/07/concept/en/ElectricLamp" class="cyc_term">ElectricLamp</a>, and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Streetlight" class="cyc_term">Streetlight</a>); or it may be for specially directed illumination (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/AutomotiveLight" class="cyc_term">AutomotiveLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/Flashlight" class="cyc_term">Flashlight</a>); or it may be for use in a signal or sign (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/TrafficLight" class="cyc_term">TrafficLight</a> and <a href="http://sw.opencyc.org/2009/04/07/concept/en/IndicatorLight" class="cyc_term">IndicatorLight</a>); or it may be for some other special purposes (as by instances of <a href="http://sw.opencyc.org/2009/04/07/concept/en/StrobeLight" class="cyc_term">StrobeLight</a>). source of illumination