]> 2008/06/10 OpenCyc Knowledge Base Copyright© 2001-2008 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. 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. A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> is a collection that is a subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRCCC5wpEbGdrcN5Y29ycA" class="cyc_term">Path_Generic</a>. There are several types of path, according to the medium or surface the path goes through or over. In addition, the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViOopwpEbGdrcN5Y29ycA" class="cyc_term">PathArtifact</a> can be broken down into more specific <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a>s. At a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPu9xJwpEbGdrcN5Y29ycA" class="cyc_term">JunctionOfPaths</a>, the joined paths all have at least one <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> in common. PathType path type types of path type of path path types The path followed by an object revolving around another object, under the influence of gravitation. orbit OrbitalPath A collection of paths; a subset of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1ispwpEbGdrcN5Y29ycA" class="cyc_term">PathThroughSolid</a>. Each element of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPKk6pwpEbGdrcN5Y29ycA" class="cyc_term">AirPathThroughSolid</a> is a region of open space extending from at least one portal on the surface of a solid, into the interior. The portal may be open to surrounding air (as with a highway tunnel), or it may be covered. Some elements of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPKk6pwpEbGdrcN5Y29ycA" class="cyc_term">AirPathThroughSolid</a> go `all the way through' the solid; such paths have at least two portals. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjVl5wpEbGdrcN5Y29ycA" class="cyc_term">Portal</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRqJwpEbGdrcN5Y29ycA" class="cyc_term">Cavity</a>, #$PieceOfFreeSpace. AirPathThroughSolid air path through solid bypass Bypass-Path The collection of all instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRCCC5wpEbGdrcN5Y29ycA" class="cyc_term">Path_Generic</a> that are, by design, paths around, or circumventing, some object. The collection of all designated or customary <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>s that go entirely through water (underwater). This would include designated undersea lanes for submarines, or corridors of fish migrations, etc. An object following such a path is immersed in, and supported by, the water. Thus it excludes a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjKg5wpEbGdrcN5Y29ycA" class="cyc_term">SolidSurfacePathThroughWater</a>, and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1QU5wpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfacePath</a>. For arbitrary trajectories of motions through water, use <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv4dBd5wpEbGdrcN5Y29ycA" class="cyc_term">TrajectoryThroughWater</a>. water pathway PathThroughWater PathThroughSolid The collection of all existing or designated <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>s through solid material. Designated paths for drilling and machining are examples, as are the paths of tunnel digging and animal burrowings. Boring into wood and burrowing through the earth are locomotions which may follow paths of this type. For the pure <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRepwpEbGdrcN5Y29ycA" class="cyc_term">Trajectory</a> of a motion through a solid (not a designated or pre-existing path), use <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvtSHd5wpEbGdrcN5Y29ycA" class="cyc_term">TrajectoryThroughSolid</a>. path through solid PathThroughAir air pathway A designated or pre-defined <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a> all of which passes through air (mid-air). This includes air lanes, designated air navigation routes, etc. An object following this <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRCCC5wpEbGdrcN5Y29ycA" class="cyc_term">Path_Generic</a> is immersed in, and supported by, if anything, the air. Thus it excludes a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjKQpwpEbGdrcN5Y29ycA" class="cyc_term">SolidSurfacePathThroughAir</a>, a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1Sl5wpEbGdrcN5Y29ycA" class="cyc_term">PathThroughAirHangingFromSolid</a>, and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1QU5wpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfacePath</a>. For general trajectories of moving objects through air, use <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgCLLJwpEbGdrcN5Y29ycA" class="cyc_term">TrajectoryThroughAir</a>. path through air involving hanging from a solid A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a> through air, while hanging from a solid, such as brachiating from one tree branch to another. An object following this <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a> is immersed in the air but supported by the solid. PathThroughAirHangingFromSolid railway-siding A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi-lJwpEbGdrcN5Y29ycA" class="cyc_term">Railway</a>; each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r94DM5kJ5EdqAAAACs0x8nw" class="cyc_term">Railway_Siding</a> is a short track that separates, runs parallel, and rejoins the main track. A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r94DM5kJ5EdqAAAACs0x8nw" class="cyc_term">Railway_Siding</a> allows one train to pass another when both are using the same main track. Railway-Siding solid path through air The collection of all existing or designated <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>s that pass through air along a solid surface. An object following such a path is immersed in the air but supported by the solid surface of the path. To refer to a pure trajectory of the motion, regardless of whether there is any pre-existing or pre-designated <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>, see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwREN6pwpEbGdrcN5Y29ycA" class="cyc_term">SolidSurfaceTrajectoryThroughAir</a>. SolidSurfacePathThroughAir The collection of pre-designated or customary <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>s that lie along water surfaces. A moving object following (or blocking) this path is supported by the water, but is neither fully immersed in the water nor completely in the air. This collection includes sea-lanes, channels, pre-designated ship routes, safe-passage mine-free paths, etc. They may or may not be marked with <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgD3u5wpEbGdrcN5Y29ycA" class="cyc_term">Buoy</a>s. Certain bodies of water like <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjzcZwpEbGdrcN5Y29ycA" class="cyc_term">Canal</a>s are generally <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1QU5wpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfacePath</a>s or have <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1QU5wpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfacePath</a>s on them. For the pure <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRepwpEbGdrcN5Y29ycA" class="cyc_term">Trajectory</a> of the motion of any object on a water surface, use <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvt8Q4JwpEbGdrcN5Y29ycA" class="cyc_term">WaterSurfaceTrajectory</a>. WaterSurfacePath water route railroad Railway A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWjXAJwpEbGdrcN5Y29ycA" class="cyc_term">TransportFacility</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkCmpwpEbGdrcN5Y29ycA" class="cyc_term">PathForWheeledVehicles</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi-lJwpEbGdrcN5Y29ycA" class="cyc_term">Railway</a> is a pathway made of railroad tracks and used for train transportation. It includes main lines and sidings. SolidSurfacePathThroughWater The collection of all existing or designated <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJXokJwpEbGdrcN5Y29ycA" class="cyc_term">Path_Spatial</a>s through <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjAHZwpEbGdrcN5Y29ycA" class="cyc_term">Water</a> that are situated along solid surfaces. An object following such a path is immersed in the water but supported by the solid surface. For the pure <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRepwpEbGdrcN5Y29ycA" class="cyc_term">Trajectory</a> of any <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkEjpwpEbGdrcN5Y29ycA" class="cyc_term">objectMoving</a> through water along a solid surface, use <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwSreApwpEbGdrcN5Y29ycA" class="cyc_term">SolidSurfaceTrajectoryThroughWater</a>. solid path through water transportation-topic An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgQsP1F2xEdif1wACs2IMlQ" class="cyc_term">Topic</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgQtd9F2xEdif1wACs2IMlQ" class="cyc_term">Transportation_Topic</a> is a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a> which (in some significant sense) has to do with the topic of transportation. Transportation-Topic The collection of all specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHIBS0h_TEdaAAABQ2rksLw" class="cyc_term">FirstOrderCollection</a>, that is, of all collections of (first-order) collections, and an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHUFI8h_TEdaAAABQ2rksLw" class="cyc_term">ThirdOrderCollection</a>. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHQdVmB_TEdaAAABQ2rksLw" class="cyc_term">SecondOrderCollection</a> are collections of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHIBS0h_TEdaAAABQ2rksLw" class="cyc_term">FirstOrderCollection</a>s. Any instance of any instance of any instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHQdVmB_TEdaAAABQ2rksLw" class="cyc_term">SecondOrderCollection</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaApwpEbGdrcN5Y29ycA" class="cyc_term">Individual</a>. SecondOrderCollection second-order Cyc collection group-topic Group-Topic A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rtGXkHpNaEdqAAAACs0uFOQ" class="cyc_term">KBDependentCollection</a> of collections of collections (and thus an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviPYH5wpEbGdrcN5Y29ycA" class="cyc_term">CollectionTypeType</a> and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvtppU5wpEbGdrcN5Y29ycA" class="cyc_term">CollectionType</a>). A sibling-disjoint collection type is such that its known (i.e. KB-represented) instances are collections that -- save for any that are related to each other by <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> and any that are explicitly asserted to be exceptions (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a>) -- are disjoint from each other. More precisely, each instance <code>SIB</code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA4pwpEbGdrcN5Y29ycA" class="cyc_term">SiblingDisjointCollectionType</a> is a collection of collections that has the following KB-dependent property: For any two known instances <code>COL1</code> and <code>COL2</code> of <code>SIB</code>, at least one of the following is known to hold: <pre> (a) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> COL1 COL2) (b) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> COL2 COL1) (c) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a> COL1 COL2) (d) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA45wpEbGdrcN5Y29ycA" class="cyc_term">disjointWith</a> COL1 COL2) </pre> Moreover, note that if <code>MT</code> is a context (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA1ZwpEbGdrcN5Y29ycA" class="cyc_term">Microtheory</a>) in which (i) both <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> COL1 SIB)</code> and <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> COL2 SIB)</code> hold and (ii) neither <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> COL1 COL2)</code> nor <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> COL2 COL1)</code> nor <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a> COL1 COL2)</code> is known to hold (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP-JvpwpEbGdrcN5Y29ycA" class="cyc_term">knownSentence</a>), then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA45wpEbGdrcN5Y29ycA" class="cyc_term">disjointWith</a> COL1 COL2)</code> holds by default in <code>MT</code>. For example, in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjakJwpEbGdrcN5Y29ycA" class="cyc_term">BiologyMt</a> both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a> are instances of the sibling-disjoint collection type <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjK65wpEbGdrcN5Y29ycA" class="cyc_term">BiologicalSpecies</a>, while neither (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a>) nor (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a>) nor (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a>) is known to hold in that context; consequently, (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA45wpEbGdrcN5Y29ycA" class="cyc_term">disjointWith</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a>) holds by default in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjakJwpEbGdrcN5Y29ycA" class="cyc_term">BiologyMt</a>. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA4pwpEbGdrcN5Y29ycA" class="cyc_term">SiblingDisjointCollectionType</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVji6JwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalTaxon</a> (and its specializations), <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwKTnSJwpEbGdrcN5Y29ycA" class="cyc_term">OrganismPartType</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwE01SZwpEbGdrcN5Y29ycA" class="cyc_term">RelationshipTypeByArity</a>. See the generalization <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rk8dxOFcGEdaLwgACs0uFOQ" class="cyc_term">SiblingDisjointSetOrCollectionType</a>. Also cf. the stronger notion of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWPoRpwpEbGdrcN5Y29ycA" class="cyc_term">DisjointCollectionType</a>. sibling disjoint collection type SiblingDisjointCollectionType ObjectType The collection of all collections that are "object-like" in at least one respect. A collection <code>COL</code> is object-like just in case there is some sense of 'part' according to which any (or nearly any) given proper part of an instance of <code>COL</code> is not itself an instance of <code>COL</code>; when this happens <code>COL</code> is said to be object-like with respect to that sense of 'part'. More precisely, for a collection <code>COL</code> to be an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a> it is sufficient that there be some specialization <code>PARTPRED</code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> such that, for any <code>OBJ1</code> and <code>OBJ2</code>, if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> OBJ1 COL)</code> and <code>(PARTPRED OBJ1 OBJ2)</code> both hold, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> OBJ2 COL)</code> does not hold. (Also sufficient for <code>COL</code>'s being an object-type is that there be some specialization <code>INVPARTPRED</code> of the inverse of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWHsNJwpEbGdrcN5Y29ycA" class="cyc_term">genlInverse</a>) such that <code>(INVPARTPRED OBJ2 OBJ1)</code>, with everything else remaining the same as above.) Note that neither of the above sufficient conditions for <code>COL</code>'s being an object-type is strictly necessary: some exceptions are allowed. Thus as long as either one of the above conditionals holds in nearly all cases, <code>COL</code> should be considered an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. Here are two examples. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. Take an instance of that, say my car. Now consider one of the proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj5FpwpEbGdrcN5Y29ycA" class="cyc_term">physicalParts</a> of my car, say the steering wheel. The steering wheel is not an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. And the same would be true for any proper physical part of any car. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a>. No proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a> of a year is itself a year. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. See <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir35wpEbGdrcN5Y29ycA" class="cyc_term">StuffType</a> for the contrasting (though not disjoint) notion of being stuff-like. type of object Pretty String (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" 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/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" 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. prettyString A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> is a collection that is a subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRCCC5wpEbGdrcN5Y29ycA" class="cyc_term">Path_Generic</a>. There are several types of path, according to the medium or surface the path goes through or over. In addition, the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViOopwpEbGdrcN5Y29ycA" class="cyc_term">PathArtifact</a> can be broken down into more specific <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a>s. At a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPu9xJwpEbGdrcN5Y29ycA" class="cyc_term">JunctionOfPaths</a>, the joined paths all have at least one <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> in common. PathType path type A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> is a collection that is a subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRCCC5wpEbGdrcN5Y29ycA" class="cyc_term">Path_Generic</a>. There are several types of path, according to the medium or surface the path goes through or over. In addition, the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViOopwpEbGdrcN5Y29ycA" class="cyc_term">PathArtifact</a> can be broken down into more specific <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a>s. At a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPu9xJwpEbGdrcN5Y29ycA" class="cyc_term">JunctionOfPaths</a>, the joined paths all have at least one <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOOJwpEbGdrcN5Y29ycA" class="cyc_term">PathType</a> in common. PathType path type