]> 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. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r-Lq2nITNQdeahbao7GpHpg" class="cyc_term">VehicleTypeByPathway</a> are collections of vehicles (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>), each of which group together vehicle instances which are designed to traverse particular types of pathways. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_qaMjITKQdefc9lu1TOnMA" class="cyc_term">LandTransportationVehicle</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> are members of this collection. type of vehicle classified by pathway used VehicleTypeByPathway types of vehicle classified by pathway used

submarine Submarine <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViMW5wpEbGdrcN5Y29ycA" class="cyc_term">Submarine</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv3uLA5wpEbGdrcN5Y29ycA" class="cyc_term">Watercraft_Subsurface</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPu1fpwpEbGdrcN5Y29ycA" class="cyc_term">Container_PressureBarrier</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjw85wpEbGdrcN5Y29ycA" class="cyc_term">ModernNavalShip</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViMW5wpEbGdrcN5Y29ycA" class="cyc_term">Submarine</a> is a pressurized vessel designed to travel underwater.

AirTransportationVehicle air transportation vehicle A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViuUJwpEbGdrcN5Y29ycA" class="cyc_term">AirTransportationDevice</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> is a device which is both self-powered and controlled in some fashion by a user, and is used for transportation through air. Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCi5wpEbGdrcN5Y29ycA" class="cyc_term">Airplane</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwEINmJwpEbGdrcN5Y29ycA" class="cyc_term">Ultralight</a>, but not collections of non-<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjUvZwpEbGdrcN5Y29ycA" class="cyc_term">SelfPoweredDevice</a>s such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvYBA7pwpEbGdrcN5Y29ycA" class="cyc_term">Glider</a>.

A specialization of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjU_5wpEbGdrcN5Y29ycA" class="cyc_term">LandTransportationDevice</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjT95wpEbGdrcN5Y29ycA" class="cyc_term">RoadVehicle</a> is a self-powered vehicle designed primarily for travel on roads (although some instances may also have limited off-road capabilities). Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjT95wpEbGdrcN5Y29ycA" class="cyc_term">RoadVehicle</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVizgZwpEbGdrcN5Y29ycA" class="cyc_term">Truck</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0v5wpEbGdrcN5Y29ycA" class="cyc_term">Bus_RoadVehicle</a>. Since <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjT95wpEbGdrcN5Y29ycA" class="cyc_term">RoadVehicle</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjT95wpEbGdrcN5Y29ycA" class="cyc_term">RoadVehicle</a> is self-powered. Consequently, road transportation devices which are not self-powered (for example, all the instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjo0JwpEbGdrcN5Y29ycA" class="cyc_term">Bicycle</a>) are not included in this collection. motor vehicle RoadVehicle

over snow vehicle OverSnowVehicle The collection of vehicles which are intended to travel easily over snow-covered terrain.

LandTransportationVehicle A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjU_5wpEbGdrcN5Y29ycA" class="cyc_term">LandTransportationDevice</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_qaMjITKQdefc9lu1TOnMA" class="cyc_term">LandTransportationVehicle</a> is a device which is both self-powered and controlled in some fashion by a user, and is used for transportation across land. Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_qaMjITKQdefc9lu1TOnMA" class="cyc_term">LandTransportationVehicle</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwPzlHZwpEbGdrcN5Y29ycA" class="cyc_term">Snowmobile</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVizgZwpEbGdrcN5Y29ycA" class="cyc_term">Truck</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0v5wpEbGdrcN5Y29ycA" class="cyc_term">Bus_RoadVehicle</a>, but not collections of non-<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjUvZwpEbGdrcN5Y29ycA" class="cyc_term">SelfPoweredDevice</a>s such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjo0JwpEbGdrcN5Y29ycA" class="cyc_term">Bicycle</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViyvZwpEbGdrcN5Y29ycA" class="cyc_term">Skateboard</a>. land vehicle

A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjGhZwpEbGdrcN5Y29ycA" class="cyc_term">WaterTransportationDevice</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ropDJ5oVoQdeADpzQMiIrgg" class="cyc_term">WaterTransportationVehicle</a> is a device which is both self-powered and controlled in some fashion by a user, and is used for transportation on or below the surface of water. Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ropDJ5oVoQdeADpzQMiIrgg" class="cyc_term">WaterTransportationVehicle</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCb9JwpEbGdrcN5Y29ycA" class="cyc_term">CruiseShip</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViMW5wpEbGdrcN5Y29ycA" class="cyc_term">Submarine</a>, but not collections of non-<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjUvZwpEbGdrcN5Y29ycA" class="cyc_term">SelfPoweredDevice</a>s such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjW8JwpEbGdrcN5Y29ycA" class="cyc_term">Sailboat</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgEYsJwpEbGdrcN5Y29ycA" class="cyc_term">Rowboat</a>. water transportation vehicle WaterTransportationVehicle

kind of artifact not distinguished by brand or model An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHQdVmB_TEdaAAABQ2rksLw" class="cyc_term">SecondOrderCollection</a> and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwO3H5pwpEbGdrcN5Y29ycA" class="cyc_term">ArtifactType</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rejmDbrF_QdeIENT1qpbYzQ" class="cyc_term">ArtifactTypeByGenericCategory</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkH_ZwpEbGdrcN5Y29ycA" class="cyc_term">Artifact</a>s grouped together according to some feature(s) other than brand or model. ArtifactTypeByGenericCategory Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r-Lq2nITNQdeahbao7GpHpg" class="cyc_term">VehicleTypeByPathway</a> are collections of vehicles (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>), each of which group together vehicle instances which are designed to traverse particular types of pathways. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_qaMjITKQdefc9lu1TOnMA" class="cyc_term">LandTransportationVehicle</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> are members of this collection. type of vehicle classified by pathway used VehicleTypeByPathway A collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvtppU5wpEbGdrcN5Y29ycA" class="cyc_term">CollectionType</a>s. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvprlOZwpEbGdrcN5Y29ycA" class="cyc_term">FacetingCollectionType</a> is a collection-type that "facets" -- i.e. stands in the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvjldVJwpEbGdrcN5Y29ycA" class="cyc_term">facets_Generic</a> (q.v.) relation to -- another collection. Examples include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVibOJwpEbGdrcN5Y29ycA" class="cyc_term">AutomobileTypeByBrand</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rANFO8Ec-EdaEKABQ2sS97g" class="cyc_term">MusicTypeByGenre</a>, which facet <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOJpwpEbGdrcN5Y29ycA" class="cyc_term">Music</a>, respectively. faceting collection type FacetingCollectionType Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r-Lq2nITNQdeahbao7GpHpg" class="cyc_term">VehicleTypeByPathway</a> are collections of vehicles (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLzhaZwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice_Vehicle</a>), each of which group together vehicle instances which are designed to traverse particular types of pathways. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_qaMjITKQdefc9lu1TOnMA" class="cyc_term">LandTransportationVehicle</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rz9o1UoVbQdeGXJ2yLxG0_A" class="cyc_term">AirTransportationVehicle</a> are members of this collection. type of vehicle classified by pathway used VehicleTypeByPathway 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 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 type of vehicle TransportationDeviceType An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rHQdVmB_TEdaAAABQ2rksLw" class="cyc_term">SecondOrderCollection</a> and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjKkZwpEbGdrcN5Y29ycA" class="cyc_term">ProductType</a>. Instances are specs of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjVQJwpEbGdrcN5Y29ycA" class="cyc_term">TransportationDevice</a>, the main function of which is to play the purpose of a vehicle, i.e., to play the role of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViog5wpEbGdrcN5Y29ycA" class="cyc_term">vehicle</a> in transportation events. FacetInstanceCollection facet collection A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvtppU5wpEbGdrcN5Y29ycA" class="cyc_term">CollectionType</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv1fLiZwpEbGdrcN5Y29ycA" class="cyc_term">FacetInstanceCollection</a> is a collection that is an instance of a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvprlOZwpEbGdrcN5Y29ycA" class="cyc_term">FacetingCollectionType</a> (q.v.). For example, the facet-instance-collection (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rBVDJsPLMQdiZD5jLVkyKUw" class="cyc_term">WineOfVintageFn</a> (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjympwpEbGdrcN5Y29ycA" class="cyc_term">YearFn</a> 1926)) is an instance of the faceting-collection-type <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWdpZhPLLQdiKEtsuZMndzQ" class="cyc_term">WineTypeByVintage</a>. 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