]> 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. CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object Mx4rvVj1gZwpEbGdrcN5Y29ycA cord like objects cordlike objects cord like object cord-like objects cordlike object Spandex-Fiber The collection of all quantities of pure spandex, a synthetic fiber typically used in garments to increase their elasticity. spandex Strand The collection of all strands. A type of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a>. strand Bristle bristle The collection of all bristles A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeArtifact" class="cyc_term">CordlikeArtifact</a> is both cordlike (i.e., it is relatively thin and has ends) and is an artifact. An important specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeArtifact" class="cyc_term">CordlikeArtifact</a> is <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cord" class="cyc_term">Cord</a>, which is the collection of artifacts that are not only cordlike, but which are actual cords. For example, a chain (see <a href="http://sw.opencyc.org/2008/06/10/concept/en/Chain" class="cyc_term">Chain</a>) is cordlike and an artifact (hence an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeArtifact" class="cyc_term">CordlikeArtifact</a>) but chains are not actually cords. CordlikeArtifact cordlike artifact axon The collection of all axons (or 'neuraxons'), which are fibers of a <a href="http://sw.opencyc.org/2008/06/10/concept/en/Neuron" class="cyc_term">Neuron</a> which transmit signals away from the cell body to other <a href="http://sw.opencyc.org/2008/06/10/concept/en/Neuron" class="cyc_term">Neuron</a>s or <a href="http://sw.opencyc.org/2008/06/10/concept/en/MuscleTissue" class="cyc_term">MuscleTissue</a>. Axon the collection of electrical power lines power line PowerLine segmented cord The collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> that consists of a series of smaller units, easily identifiable as 'segments.' A prototypical example is a <a href="http://sw.opencyc.org/2008/06/10/concept/en/Chain" class="cyc_term">Chain</a>, which is a cordlike or strandlike object made up of a series of links. Though in the typical case, the segments of an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/SegmentedCordlikeObject" class="cyc_term">SegmentedCordlikeObject</a> will be of a different kind than the object itself (the links of a chain are typically not themselves chains), this need not be the case (consider a chain of links that are themselves chains formed into hoops). Typically, for any instance SEGOBJ of <a href="http://sw.opencyc.org/2008/06/10/concept/en/SegmentedCordlikeObject" class="cyc_term">SegmentedCordlikeObject</a>, (<a href="http://sw.opencyc.org/2008/06/10/concept/en/seriesMemberType" class="cyc_term">seriesMemberType</a> SEGOBJ TYPE) implies (<a href="http://sw.opencyc.org/2008/06/10/concept/en/relationInstanceExists" class="cyc_term">relationInstanceExists</a> <a href="http://sw.opencyc.org/2008/06/10/concept/en/groupMembers" class="cyc_term">groupMembers</a> SEGOBJ TYPE). SegmentedCordlikeObject string A string made of nylon, metal or gut which is used to produce particular sounds on a stringed instrument - depending on its length and width and material. StringInAStringedInstrument SpinalCord spinal cord Cord of nervous tissue that extends from the brain lengthwise along the back in the spinal canal Snake The collection of all snakes; a subset of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Reptile" class="cyc_term">Reptile</a>. Each element of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Snake" class="cyc_term">Snake</a> is a limbless, scaly, vermiform reptile with a long, narrow, tapering, mostly smooth body. Snakes in many species have poisonous and sometimes fatal bites. Snakes live on land, in trees, in fresh water, and in the sea (sea snakes). <a href="http://sw.opencyc.org/2008/06/10/concept/en/Snake" class="cyc_term">Snake</a> constitutes a biological suborder (also called Serpentes or Ophidia). snake AnatomicalVessel The collection of all anatomical vessels in <a href="http://sw.opencyc.org/2008/06/10/concept/en/Animal" class="cyc_term">Animal</a>s. Instances of this collection are tubular animal tissue which acts as a conduit for body fluids or substances passing into or out of the body. anatomical vessel nerve Nerve The collection of all nerves. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a> is a bundle of many nerve fibers (<a href="http://sw.opencyc.org/2008/06/10/concept/en/Axon" class="cyc_term">Axon</a>s) covered with a wrapping of <a href="http://sw.opencyc.org/2008/06/10/concept/en/ConnectiveTissue" class="cyc_term">ConnectiveTissue</a>. Sensory nerves (see <a href="http://sw.opencyc.org/2008/06/10/concept/en/SensoryNerve" class="cyc_term">SensoryNerve</a>) carry nerve impulses to the central nervous system; motor nerves (see <a href="http://sw.opencyc.org/2008/06/10/concept/en/MotorNerve" class="cyc_term">MotorNerve</a>) carry impulses to the muscles. Most nerves are mixed, containing axons of both motor and sensory neurons. twisted thing Twisted The collection of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> whose instances consist of twisted fibers like rope or cable. An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Collection" class="cyc_term">Collection</a>, and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Generic" class="cyc_term">Path_Generic</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> is a path with two distinct ends that do not &quot;overlap&quot; each other (in the case of spatial paths, the two ends are spatially disjoint). Since no instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> has ends that join at one point, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Cyclic" class="cyc_term">Path_Cyclic</a>. Although instances of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> have distinct ends, some instances may have more than two things that are its &quot;end-points&quot;. For example, a path between Austin and Pittsburgh can also be a path between Texas and Pennsylvania. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/en/Pipe_GenericConduit" class="cyc_term">Pipe_GenericConduit</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Stream" class="cyc_term">Stream</a>. Path-Simple path that is not a loop Netting netting A fabric of cords or wires that cross at regular intervals and are knotted at the crossings. CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object member of { tangible things, lines } The &quot;collection-intersection&quot; of <a href="http://sw.opencyc.org/2008/06/10/concept/en/LinearObject" class="cyc_term">LinearObject</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a> (qq.v.). <a href="http://sw.opencyc.org/2008/06/10/concept/en/LinearObject_Tangible" class="cyc_term">LinearObject_Tangible</a> is the collection of all and only tangible, linearly-shaped objects. They might be straight or curved, bounded or unbounded, finite or (at least in principle) infinite. All tangible linear objects are in fact three-dimensional. <p/> In certain contexts, a long and thin tangible object or region might be treated as a line. For example, a wire might serve as a line in a communication network; a river might demarcate the boundary between two countries; a line drawn in the sand might serve as a volleyball court boundary. <p/> Important specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/LinearObject_Tangible" class="cyc_term">LinearObject_Tangible</a> are <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/en/EdgeOnObject" class="cyc_term">EdgeOnObject</a>. LinearObject-Tangible CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object nunchucks An <a href="http://sw.opencyc.org/2008/06/10/concept/en/ExistingObjectType" class="cyc_term">ExistingObjectType</a> and specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CloseQuarterCombatWeapon" class="cyc_term">CloseQuarterCombatWeapon</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nunchucks" class="cyc_term">Nunchucks</a> is a martial arts <a href="http://sw.opencyc.org/2008/06/10/concept/en/Weapon" class="cyc_term">Weapon</a> consisting of two <a href="http://sw.opencyc.org/2008/06/10/concept/en/Shaft" class="cyc_term">Shaft</a>s connected with a short <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> such as a rope or chain. Nunchucks BT <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/en/broaderTerm" class="cyc_term">broaderTerm</a> <b>TERM1</b> <b>TERM2</b>)</code> means that <code><b>TERM2</b></code> is <i>broader</i> than <code><b>TERM1</b></code>, in an extremely general sense of &quot;broader&quot;. For example, <code><b>TERM2</b></code> is, in the relevant sense, broader than <code><b>TERM1</b></code> if any of the following hold:<br><br> <code><b>TERM2</b></code> is a collection that subsumes <code><b>TERM1</b></code>; <br> <code><b>TERM2</b></code> is a collection that has <code><b>TERM1</b></code> as an instance; <br> <code><b>TERM2</b></code> is a collection, instances of which have instances of the collection <code><b>TERM1</b></code> as parts; <br> <code><b>TERM2</b></code> has <code><b>TERM1</b></code> as a part; <br><br> This list of reasons for why <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/en/broaderTerm" class="cyc_term">broaderTerm</a> <b>TERM1</b> <b>TERM2</b>)</code> could hold is not exhaustive, but it should give a good indication of how general the <a href="http://sw.opencyc.org/2008/06/10/concept/en/broaderTerm" class="cyc_term">broaderTerm</a> relation actually is. broaderTerm CordlikeObject A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is a partially tangible non-fluid object (so <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> is disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/en/FluidTangibleThing" class="cyc_term">FluidTangibleThing</a>) whose length is significantly greater than either its height or width. Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> has a high degree of flexibility. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/en/CordlikeObject" class="cyc_term">CordlikeObject</a> include the collections <a href="http://sw.opencyc.org/2008/06/10/concept/en/Nerve" class="cyc_term">Nerve</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/en/Tape" class="cyc_term">Tape</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/en/Cable" class="cyc_term">Cable</a>. cord-like object The collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/en/PartiallyTangible" class="cyc_term">PartiallyTangible</a> that can be flexed, twisted, contorted. <a href="http://sw.opencyc.org/2008/06/10/concept/en/Flexible" class="cyc_term">Flexible</a> objects which retain their contorted shape are instances of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Bendable" class="cyc_term">Bendable</a> (q.v.); <a href="http://sw.opencyc.org/2008/06/10/concept/en/Flexible" class="cyc_term">Flexible</a> objects which vigorously bounce back to their original shapes when contorted are instances of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Elastic" class="cyc_term">Elastic</a>. Flexible flexible thing TemporalStuffType type of temporally stuff-like thing A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/StuffType" class="cyc_term">StuffType</a> (q.v.) whose instances are all and only those collections that are temporally stuff-like. A collection <code><b>COL</b></code> is temporally stuff-like just in case every purely temporal part (see <a href="http://sw.opencyc.org/2008/06/10/concept/en/timeSlices" class="cyc_term">timeSlices</a>) of an instance of <code><b>COL</b></code> is itself an instance of <code><b>COL</b></code>, unless it is a temporal part of a temporal granule of <code><b>COL</b></code> (see <a href="http://sw.opencyc.org/2008/06/10/concept/en/granuleOfTemporalStuff" class="cyc_term">granuleOfTemporalStuff</a>). <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/en/TemporalStuffType" class="cyc_term">TemporalStuffType</a> it is both a necessary and sufficient condition that for any <code><b>OBJ1</b></code> and <code><b>OBJ2</b></code> (with <code><b>OBJ2</b></code> at or above <code><b>COL</b></code>'s temporal granularity level), if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/en/isa" class="cyc_term">isa</a> <b>OBJ1</b> <b>COL</b>)</code> and <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/en/timeSlices" class="cyc_term">timeSlices</a> <b>OBJ1</b> <b>OBJ2</b>)</code>, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/en/isa" class="cyc_term">isa</a> <b>OBJ2</b> <b>COL</b>)</code>. <p/> Consider <a href="http://sw.opencyc.org/2008/06/10/concept/en/WalkingOnTwoLegs" class="cyc_term">WalkingOnTwoLegs</a>. Take an arbitrary instance <code><b>WALK</b></code> of this collection (say Miss America 2000's victory walk down the runway and back); and then take an arbitrary time-slice <code><b>SUBWALK</b></code> of <code><b>WALK</b></code> that subsumes at least one instance of (the <a href="http://sw.opencyc.org/2008/06/10/concept/en/granuleOfTemporalStuff" class="cyc_term">granuleOfTemporalStuff</a> for <a href="http://sw.opencyc.org/2008/06/10/concept/en/WalkingOnTwoLegs" class="cyc_term">WalkingOnTwoLegs</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/en/TakingAStep" class="cyc_term">TakingAStep</a> (say her trip back from the end of the runway). <code><b>SUBWALK</b></code> is itself an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/WalkingOnTwoLegs" class="cyc_term">WalkingOnTwoLegs</a>. So <a href="http://sw.opencyc.org/2008/06/10/concept/en/WalkingOnTwoLegs" class="cyc_term">WalkingOnTwoLegs</a> is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/TemporalStuffType" class="cyc_term">TemporalStuffType</a>. See <a href="http://sw.opencyc.org/2008/06/10/concept/en/TemporalObjectType" class="cyc_term">TemporalObjectType</a> for the disjoint notion of being temporally object-like. surfaces portals and cavities spatial topic SurfacesPortalsAndCavities-Spatial-Topic A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Spatial" class="cyc_term">Path_Spatial</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Customary" class="cyc_term">Path_Customary</a> is a spatial path which was either designed as a path by some intelligent agent, or which has a significant known function as a path for movement. Examples include roads, railroads, sea-lanes, cowpaths, boardwalks, tubes, channels, blood vessels, fibers, wires, and communication links. An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Customary" class="cyc_term">Path_Customary</a> may be either an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Simple" class="cyc_term">Path_Simple</a> (in which case it would be a path with two distinct ends, not forming a cycle) or an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/en/Path_Cyclic" class="cyc_term">Path_Cyclic</a>. route Path-Customary prettyString (<a href="http://sw.opencyc.org/2008/06/10/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/2008/06/10/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. Pretty String