]> 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. OrganismParts-Biology-Topic A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rAmoSCGJbQdiSXZJvYiNhkQ" class="cyc_term">CycVocabularyTopic</a> and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rtGXkHpNaEdqAAAACs0uFOQ" class="cyc_term">KBDependentCollection</a>. organism parts biology topic HaploidCell haploid A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQwdFJwpEbGdrcN5Y29ycA" class="cyc_term">HaploidCell</a> is a cell which has a single chromosome set. For example, gametes such as sperm and ova are haploid cells (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvfk5a5wpEbGdrcN5Y29ycA" class="cyc_term">Gamete</a>). There also haploid forms of some mature multicellular organisms. The collection of complex ovum structures produced and emitted (laid) by female birds, in which the ovum is swollen with yolk (a food reserve substance), and around which other stuff (the white and the shell) is secreted before the egg is laid. Bird eggs have usually been fertilized before the shell forms around them; chicken eggs sold commercially for food are usually unfertilized. Egg-Birds bird egg Bulb-ThePlantPart A collection of parts found in some monocotyledonous plants. Typical elements of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjxSJwpEbGdrcN5Y29ycA" class="cyc_term">Bulb_ThePlantPart</a> are found just below the surface of the soil. A plant bulb is NOT a root; rather, it is a very short stem with associated leaf bases that are thick and broad, forming a roundish bulb with many layers of leaf bases. bulb cell The collection of living cells; a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVim7ZwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalLivingObject</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuY5wpEbGdrcN5Y29ycA" class="cyc_term">Cell</a> is one of the basic structural units of nearly all living things, consisting (at least) of cytoplasm bounded by a cell membrane. Only the living structures viruses, mitochondria, and plastids are not composed of cells. Cell OrganismPart A specialization of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVid6ZwpEbGdrcN5Y29ycA" class="cyc_term">PhysicalPartOfObject</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVim7ZwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalLivingObject</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQBXZpwpEbGdrcN5Y29ycA" class="cyc_term">OrganismPart</a> is a part of an organism. It may be an anatomical part or a pathological part such as a tumor. This collection includes the gross anatomical parts and microscopic anatomical parts of every individual of every species. organism part A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP4Gu5wpEbGdrcN5Y29ycA" class="cyc_term">PlantBLO</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQBXZpwpEbGdrcN5Y29ycA" class="cyc_term">OrganismPart</a>. Each instance of this collection is a physical part of some <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjG4ZwpEbGdrcN5Y29ycA" class="cyc_term">Plant</a>. An important specialization of this collection is <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj4-JwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalOrgan</a>; but <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjub5wpEbGdrcN5Y29ycA" class="cyc_term">PlantPart</a> also includes many smaller plant parts which display a similar level of organization -- they have vascular tissue, ground tissue, and an epidermis -- but are not included in the traditional understanding of a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj4-JwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalOrgan</a> (i.e. leaves, stems, roots and flowers). See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP3u1ZwpEbGdrcN5Y29ycA" class="cyc_term">PlantPartType</a>. plant part PlantPart plant organ BotanicalOrgan A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjub5wpEbGdrcN5Y29ycA" class="cyc_term">PlantPart</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj4-JwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalOrgan</a> is a major morphological and functional feature of an individual plant. Notable specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj4-JwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalOrgan</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkGk5wpEbGdrcN5Y29ycA" class="cyc_term">Flower_BotanicalPart</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjvNZwpEbGdrcN5Y29ycA" class="cyc_term">Leaf</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViYspwpEbGdrcN5Y29ycA" class="cyc_term">Stem</a>. AnimalBLO A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVim7ZwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalLivingObject</a> that includes all living animals, body parts of living animals, and body regions of living animals. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP4HYZwpEbGdrcN5Y29ycA" class="cyc_term">AnimalBLO</a> is thus the "union" (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwVScYZwpEbGdrcN5Y29ycA" class="cyc_term">collectionUnion</a>) of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViwMZwpEbGdrcN5Y29ycA" class="cyc_term">Animal</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAHJwpEbGdrcN5Y29ycA" class="cyc_term">AnimalBodyPart</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVraoZwpEbGdrcN5Y29ycA" class="cyc_term">AnimalBodyRegion</a> (qq.v.). animal or body part plant or part of a plant PlantBLO A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVim7ZwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalLivingObject</a> that includes all plants and parts of plants. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP4Gu5wpEbGdrcN5Y29ycA" class="cyc_term">PlantBLO</a> is thus the "union" (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwVScYZwpEbGdrcN5Y29ycA" class="cyc_term">collectionUnion</a>) of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjG4ZwpEbGdrcN5Y29ycA" class="cyc_term">Plant</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjub5wpEbGdrcN5Y29ycA" class="cyc_term">PlantPart</a> (qq.v.). The collection of all reproductive organs of angiosperm plants. May or may not look like conventional 'flowers'. Flower-BotanicalPart flower BotanicalCell A subset of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuY5wpEbGdrcN5Y29ycA" class="cyc_term">Cell</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjt5ZwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalCell</a> is the collection of cells which constitute the elements of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjG4ZwpEbGdrcN5Y29ycA" class="cyc_term">Plant</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjub5wpEbGdrcN5Y29ycA" class="cyc_term">PlantPart</a>, e.g., the cells making up elements of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj4-JwpEbGdrcN5Y29ycA" class="cyc_term">BotanicalOrgan</a>, of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirwpwpEbGdrcN5Y29ycA" class="cyc_term">Seed</a>, and of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuIZwpEbGdrcN5Y29ycA" class="cyc_term">Spore_PlantLifeStage</a>. botanical cell EukaryoticCell A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuY5wpEbGdrcN5Y29ycA" class="cyc_term">Cell</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a> is a cell that serves as the basic structural unit of a eukaryotic organism. These cells have a membrane-bound nucleus and other organelles. Multicellular Organisms generally have <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a>s; <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a> DNA has introns. Certain <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a>s, like the red blood corpuscles of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAkpwpEbGdrcN5Y29ycA" class="cyc_term">Person</a>s with heathy <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjgw5wpEbGdrcN5Y29ycA" class="cyc_term">Spleen</a>s, lack nuclei. eukaryotic cell Seed seed A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP4Gu5wpEbGdrcN5Y29ycA" class="cyc_term">PlantBLO</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirwpwpEbGdrcN5Y29ycA" class="cyc_term">Seed</a> is a small nodule or granule consisting of a young angiosperm and its protective container during the early (zygotic and embryonic stages) of development. If conditions are right, instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirwpwpEbGdrcN5Y29ycA" class="cyc_term">Seed</a> will grow to become adult plants. ovum Ovum A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvfk5a5wpEbGdrcN5Y29ycA" class="cyc_term">Gamete</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi9ipwpEbGdrcN5Y29ycA" class="cyc_term">Ovum</a> is a specialized gamete cell produced by meiosis (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvcE0X5wpEbGdrcN5Y29ycA" class="cyc_term">Meiosis</a>) in the reproductive tract of a female animal. Each ovum usually has half the number of chromosomes that a regular body cell does, and when fertilized by a sperm cell (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjvd5wpEbGdrcN5Y29ycA" class="cyc_term">SpermCell</a>), it becomes a zygote and continues to develop into a mature individual animal. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViQ-ZwpEbGdrcN5Y29ycA" class="cyc_term">FemaleAnimal</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjpoJwpEbGdrcN5Y29ycA" class="cyc_term">SexualReproductionEvent</a>. cell part The collection of structures which are typically found and formed as parts of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuY5wpEbGdrcN5Y29ycA" class="cyc_term">Cell</a>s. This covers components of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a>s and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjVN5wpEbGdrcN5Y29ycA" class="cyc_term">ProkaryoticCell</a>s. It includes organelles, vesicles, cell walls, extracellular matrix, plasma membranes, receptors, cellular humours, microtubules, etc. CellPart Organism-Whole A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVim7ZwpEbGdrcN5Y29ycA" class="cyc_term">BiologicalLivingObject</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjE1pwpEbGdrcN5Y29ycA" class="cyc_term">Organism_Whole</a> is a biological living object (BLO) that is a whole, and not part of some other BLO. Most instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjE1pwpEbGdrcN5Y29ycA" class="cyc_term">Organism_Whole</a> are capable of existing and reproducing while physically separate from other organisms (with allowances for eating and mating). Abnormal BLOs which are nonetheless considered to be instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjE1pwpEbGdrcN5Y29ycA" class="cyc_term">Organism_Whole</a> include instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViXQpwpEbGdrcN5Y29ycA" class="cyc_term">Virus</a>, as well as sterile hybrids and colony organisms, like those in slime molds or the instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP1N0JwpEbGdrcN5Y29ycA" class="cyc_term">PortugueseManOfWar</a>. organism The collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju55wpEbGdrcN5Y29ycA" class="cyc_term">EukaryoticCell</a>s with paired chromosomes (two sets during the metaphase of mitosis). This is the standard arrangement for the cells in the bodies of adult multicellular organisms. diploid DiploidCell animal cell The collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjuY5wpEbGdrcN5Y29ycA" class="cyc_term">Cell</a>s that <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViwMZwpEbGdrcN5Y29ycA" class="cyc_term">Animal</a>s and parts of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViwMZwpEbGdrcN5Y29ycA" class="cyc_term">Animal</a>s are made of. AnimalCell seedling A subset of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjG4ZwpEbGdrcN5Y29ycA" class="cyc_term">Plant</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj_ZZwpEbGdrcN5Y29ycA" class="cyc_term">Seedling</a> is the collection of all growing plants in the stage after germination but before primary development. The seedling stage begins with the rupture of the seed coat and ends at the vague time that the growing plant is 'well established'. Seedling A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvfk5a5wpEbGdrcN5Y29ycA" class="cyc_term">Gamete</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjvd5wpEbGdrcN5Y29ycA" class="cyc_term">SpermCell</a> is a specialized gamete cell which is produced by meiosis in the reproductive tract of a male animal. Each sperm cell usually has half the number of chromosomes that regular body cells do, and when it fertilizes an ovum (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi9ipwpEbGdrcN5Y29ycA" class="cyc_term">Ovum</a>), the ovum becomes a zygote and continues to develop into a mature individual animal. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjpQ5wpEbGdrcN5Y29ycA" class="cyc_term">MaleAnimal</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjpoJwpEbGdrcN5Y29ycA" class="cyc_term">SexualReproductionEvent</a>. SpermCell sperm cell A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjub5wpEbGdrcN5Y29ycA" class="cyc_term">PlantPart</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjl1JwpEbGdrcN5Y29ycA" class="cyc_term">Fruit</a> is a plant structure containing the seeds of an angiosperm. Many instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjl1JwpEbGdrcN5Y29ycA" class="cyc_term">Fruit</a> have fleshy walls with high concentrations of sugars or fats, and these are often eaten by humans and other animals. Fruits usually develop from the ovary wall, although some fruits include other tissues; e.g., the flesh of apples and of strawberries develops from the receptacle, and the fruits of pineapple and fig develop from a whole inflorescence (group of flowers). See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjllZwpEbGdrcN5Y29ycA" class="cyc_term">EdibleFruit</a>. fruit Fruit PlantPartType type of plant part A collection of collections. Each element of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP3u1ZwpEbGdrcN5Y29ycA" class="cyc_term">PlantPartType</a> is a collection of parts of plants, characterized by their structure and function, rather than along taxonomic lines. Since <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP3u1ZwpEbGdrcN5Y29ycA" class="cyc_term">PlantPartType</a> is a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA4pwpEbGdrcN5Y29ycA" class="cyc_term">SiblingDisjointCollectionType</a>, any two instances of it (such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWPUhZwpEbGdrcN5Y29ycA" class="cyc_term">NutShell</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjvNZwpEbGdrcN5Y29ycA" class="cyc_term">Leaf</a>) can be assumed disjoint, unless we know that one is a subset of the other. (For more information, see comment on <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA4pwpEbGdrcN5Y29ycA" class="cyc_term">SiblingDisjointCollectionType</a>.) OrganismParts-Biology-Topic A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rAmoSCGJbQdiSXZJvYiNhkQ" class="cyc_term">CycVocabularyTopic</a> and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rtGXkHpNaEdqAAAACs0uFOQ" class="cyc_term">KBDependentCollection</a>. organism parts biology topic OrganismParts-Biology-Topic A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rAmoSCGJbQdiSXZJvYiNhkQ" class="cyc_term">CycVocabularyTopic</a> and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rtGXkHpNaEdqAAAACs0uFOQ" class="cyc_term">KBDependentCollection</a>. organism parts biology topic A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwIE23ZwpEbGdrcN5Y29ycA" class="cyc_term">TimeDependentCollection</a> (q.v.). This is the collection of all and only those collections <code>COL</code> such that any thing's being an instance of <code>COL</code> depends on the current state of the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjqoZwpEbGdrcN5Y29ycA" class="cyc_term">CycKB</a>. Such a <code>COL</code> corresponds to a property defined (at least partly) in terms of the contents, features, or implementation of the Cyc Knowledge Base itself, as opposed to a property that "exists out there" in the KB-independent world. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvV281JwpEbGdrcN5Y29ycA" class="cyc_term">CycLAssertion</a> is a KB-dependent collection, membership in which requires of a given CycL sentence that it has in fact been asserted to the KB. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAoJwpEbGdrcN5Y29ycA" class="cyc_term">CycLSentence</a> is also KB-dependent, as being a CycL sentence requires being composed (ultimately) out of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvu6KTZwpEbGdrcN5Y29ycA" class="cyc_term">CycLReifiedDenotationalTerm</a>s (and perhaps variables) -- i.e. terms that are currently reified in the KB. Conversely, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5ddsJwpEbGdrcN5Y29ycA" class="cyc_term">Sentence</a> is not a KB-dependent collection. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvip9N5wpEbGdrcN5Y29ycA" class="cyc_term">KBDependentRelation</a>. KB dependent collection KBDependentCollection OrganismParts-Biology-Topic A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rAmoSCGJbQdiSXZJvYiNhkQ" class="cyc_term">CycVocabularyTopic</a> and a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rtGXkHpNaEdqAAAACs0uFOQ" class="cyc_term">KBDependentCollection</a>. organism parts biology topic CycVocabularyTopic An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvprlOZwpEbGdrcN5Y29ycA" class="cyc_term">FacetingCollectionType</a> and a specialization 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/Mx4rAmoSCGJbQdiSXZJvYiNhkQ" class="cyc_term">CycVocabularyTopic</a> is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a>s falling under a topic for which some Cyc Vocabulary exists. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgQsP1F2xEdif1wACs2IMlQ" class="cyc_term">Topic</a> is neither a strict [<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvcZ1FpwpEbGdrcN5Y29ycA" class="cyc_term">facets_Strict</a>] nor a covering [<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv86JWpwpEbGdrcN5Y29ycA" class="cyc_term">facets_Covering</a>] faceting of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a>: many <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA9JwpEbGdrcN5Y29ycA" class="cyc_term">Thing</a>s may be instances of no <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgQsP1F2xEdif1wACs2IMlQ" class="cyc_term">Topic</a>, or of multiple <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rgQsP1F2xEdif1wACs2IMlQ" class="cyc_term">Topic</a>s. cyc vocabulary topic biology-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/Mx4rgQs2412xEdif1wACs2IMlQ" class="cyc_term">Biology_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 biology. Biology-Topic