]> 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/Mx4rBU9nSCKDQdeWLpcPx_fdxQ" class="cyc_term">AcademicDepartmentTypeBySubject</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>s whose instances are distinguished by the fact that they all teach a similar subject matter (for instance, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViNWpwpEbGdrcN5Y29ycA" class="cyc_term">MathematicsDepartment</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVix25wpEbGdrcN5Y29ycA" class="cyc_term">PhilosophyDepartment</a>). This collection differs from <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWr20VCJhQdedT87yBOKnOw" class="cyc_term">DepartmentTypeByFunction</a> in that being an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a> is assumed to be a single 'function', and that faceting by subjects taught/researched is therefore a further issue. AcademicDepartmentTypeBySubject type of academic department by subject-area types of academic department by subject-area economics department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvqlEOpwpEbGdrcN5Y29ycA" class="cyc_term">Economics</a>. EconomicsDepartment ChemistryDepartment chemistry department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVixcJwpEbGdrcN5Y29ycA" class="cyc_term">Chemistry</a>. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv7a4G5wpEbGdrcN5Y29ycA" class="cyc_term">Philosophy</a>. PhilosophyDepartment philosophy department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj2cJwpEbGdrcN5Y29ycA" class="cyc_term">Linguistics</a>. LinguisticsDepartment linguistics department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViowJwpEbGdrcN5Y29ycA" class="cyc_term">ComputerScience</a>. computer science department ComputerScienceDepartment EngineeringAcademicDepartment engineering department A specialization of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ra57kUACDEdeEDgCgyeeBIg" class="cyc_term">EngineeringDepartment</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in engineering. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVimNZwpEbGdrcN5Y29ycA" class="cyc_term">EngineeringField</a>. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvZLWaJwpEbGdrcN5Y29ycA" class="cyc_term">Psychology</a>. PsychologyDepartment psychology department BiologyDepartment biology department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVili5wpEbGdrcN5Y29ycA" class="cyc_term">Biology</a>. MathematicsDepartment mathematics department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjHd5wpEbGdrcN5Y29ycA" class="cyc_term">Mathematics</a>. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir9pwpEbGdrcN5Y29ycA" class="cyc_term">Botany</a>. botany department BotanyDepartment ZoologyDepartment A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct research and teaching regarding the scientific study of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViwMZwpEbGdrcN5Y29ycA" class="cyc_term">Animal</a>s. zoology department classics department ClassicsDepartment A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in classicical languages, literature, philosophy etc. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQB9KpwpEbGdrcN5Y29ycA" class="cyc_term">History_FieldOfStudy</a>. history department HistoryDepartment A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQr0GZwpEbGdrcN5Y29ycA" class="cyc_term">Agriculture</a>. agriculture department AgricultureDepartment A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViOapwpEbGdrcN5Y29ycA" class="cyc_term">Physics</a>. PhysicsDepartment physics department A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>, instances of which conduct teaching and research in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVigVpwpEbGdrcN5Y29ycA" class="cyc_term">Anthropology</a>. AnthropologyDepartment anthropology department A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rBU9nSCKDQdeWLpcPx_fdxQ" class="cyc_term">AcademicDepartmentTypeBySubject</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>s whose instances are distinguished by the fact that they all teach a similar subject matter (for instance, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViNWpwpEbGdrcN5Y29ycA" class="cyc_term">MathematicsDepartment</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVix25wpEbGdrcN5Y29ycA" class="cyc_term">PhilosophyDepartment</a>). This collection differs from <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWr20VCJhQdedT87yBOKnOw" class="cyc_term">DepartmentTypeByFunction</a> in that being an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a> is assumed to be a single 'function', and that faceting by subjects taught/researched is therefore a further issue. AcademicDepartmentTypeBySubject type of academic department by subject-area A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rBU9nSCKDQdeWLpcPx_fdxQ" class="cyc_term">AcademicDepartmentTypeBySubject</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>s whose instances are distinguished by the fact that they all teach a similar subject matter (for instance, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViNWpwpEbGdrcN5Y29ycA" class="cyc_term">MathematicsDepartment</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVix25wpEbGdrcN5Y29ycA" class="cyc_term">PhilosophyDepartment</a>). This collection differs from <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWr20VCJhQdedT87yBOKnOw" class="cyc_term">DepartmentTypeByFunction</a> in that being an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a> is assumed to be a single 'function', and that faceting by subjects taught/researched is therefore a further issue. AcademicDepartmentTypeBySubject type of academic department by subject-area 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 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. <p/> More precisely, each instance <code><b>SIB</b></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: <p/> For any two known instances <code><b>COL1</b></code> and <code><b>COL2</b></code> of <code><b>SIB</b></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> <b>COL1</b> <b>COL2</b>) (b) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> <b>COL2</b> <b>COL1</b>) (c) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a> <b>COL1</b> <b>COL2</b>) (d) (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA45wpEbGdrcN5Y29ycA" class="cyc_term">disjointWith</a> <b>COL1</b> <b>COL2</b>) </pre> Moreover, note that if <code><b>MT</b></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> <b>COL1</b> <b>SIB</b>)</code> and <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>COL2</b> <b>SIB</b>)</code> hold and (ii) neither <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> <b>COL1</b> <b>COL2</b>)</code> nor <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBDpwpEbGdrcN5Y29ycA" class="cyc_term">genls</a> <b>COL2</b> <b>COL1</b>)</code> nor <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQtVmpwpEbGdrcN5Y29ycA" class="cyc_term">siblingDisjointExceptions</a> <b>COL1</b> <b>COL2</b>)</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> <b>COL1</b> <b>COL2</b>)</code> holds by default in <code><b>MT</b></code>. <p/> 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>. <p/> 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 &quot;object-like&quot; in at least one respect. A collection <code><b>COL</b></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><b>COL</b></code> is <i>not</i> itself an instance of <code><b>COL</b></code>; when this happens <code><b>COL</b></code> is said to be object-like with respect to that sense of 'part'. <p/> More precisely, for a collection <code><b>COL</b></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><b>PARTPRED</b></code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> such that, for any <code><b>OBJ1</b></code> and <code><b>OBJ2</b></code>, if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ1</b> <b>COL</b>)</code> and <code>(<b>PARTPRED</b> <b>OBJ1</b> <b>OBJ2</b>)</code> both hold, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ2</b> <b>COL</b>)</code> does <i>not</i> hold. (Also sufficient for <code><b>COL</b></code>'s being an object-type is that there be some specialization <code><b>INVPARTPRED</b></code> of the <i>inverse</i> 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>(<b>INVPARTPRED</b> <b>OBJ2</b> <b>OBJ1</b>)</code>, with everything else remaining the same as above.) Note that neither of the above sufficient conditions for <code><b>COL</b></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 <i>nearly</i> all cases, <code><b>COL</b></code> should be considered an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. <p/> 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 <i>not</i> 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>. <p/> 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/Mx4rBU9nSCKDQdeWLpcPx_fdxQ" class="cyc_term">AcademicDepartmentTypeBySubject</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a>s whose instances are distinguished by the fact that they all teach a similar subject matter (for instance, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViNWpwpEbGdrcN5Y29ycA" class="cyc_term">MathematicsDepartment</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVix25wpEbGdrcN5Y29ycA" class="cyc_term">PhilosophyDepartment</a>). This collection differs from <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rWr20VCJhQdedT87yBOKnOw" class="cyc_term">DepartmentTypeByFunction</a> in that being an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViWRJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicDepartment</a> is assumed to be a single 'function', and that faceting by subjects taught/researched is therefore a further issue. AcademicDepartmentTypeBySubject type of academic department by subject-area 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 &quot;facets&quot; -- 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 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>.