]> 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. methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>. methyl hydride http://en.wikipedia.org/wiki/Methane (LiquidFn Methane) liquid methane methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>. methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>. gas Gaseous-StateOfMatter A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj27ZwpEbGdrcN5Y29ycA" class="cyc_term">PartiallyTangible</a> and an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRCJwpEbGdrcN5Y29ycA" class="cyc_term">MatterTypeByPhysicalState</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi9X5wpEbGdrcN5Y29ycA" class="cyc_term">Gaseous_StateOfMatter</a> is an object of a single chemical species in the gaseous state of matter. Objects in the gaseous state of matter are at a high enough temperature or low enough pressure for the type of matter involved that the molecules are not bonded even weakly to their neighbors, and readily break free. Gaseous objects are characterized at the macroscopic level by having diffuse boundaries (when outside of containers), no shape independent of a container, and by great expandability and compressibility. Examples of things that typically have this attribute are: the helium in a child's balloon; the oxygen in Earth's atmosphere; the water vapor in Earth's atmosphere. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjNlZwpEbGdrcN5Y29ycA" class="cyc_term">ChemicalSubstanceType</a>. The instances of this collection are neither strong nor weak acids. AcidType-Negligible negligible acid methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>. A collection of collections. Each instance is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvbq2H5wpEbGdrcN5Y29ycA" class="cyc_term">HarmfulChemicalSubstance</a> instances of a common type. (e.g. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwM4jv5wpEbGdrcN5Y29ycA" class="cyc_term">Sarin</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvjGZYpwpEbGdrcN5Y29ycA" class="cyc_term">Lewisite</a>) chemical warfare agent ChemicalAgentType The substances usually used as fuels. CombustibleFuelSubstance fuel 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 AcidType-Lewis 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/Mx4rvVjNlZwpEbGdrcN5Y29ycA" class="cyc_term">ChemicalSubstanceType</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r1ZX-WvNRQdaHcIBm7fM5hA" class="cyc_term">AcidType_Lewis</a> is a type of substance whose instances are electron-pair acceptors. Lewis acid methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>. A collection of collections and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjNlZwpEbGdrcN5Y29ycA" class="cyc_term">ChemicalSubstanceType</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvUCoPtoTQdaZVdw2OtjsAg" class="cyc_term">ChemicalCompoundTypeByChemicalSpecies</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj27ZwpEbGdrcN5Y29ycA" class="cyc_term">PartiallyTangible</a> whose instances are defined _only_ by their chemical composition -- not by their physical state or any other property. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvUCoPtoTQdaZVdw2OtjsAg" class="cyc_term">ChemicalCompoundTypeByChemicalSpecies</a> are collections whose instances are completely uniform with each other in terms of chemical structure, e.g., <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjAHZwpEbGdrcN5Y29ycA" class="cyc_term">Water</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkLW5wpEbGdrcN5Y29ycA" class="cyc_term">Caffeine</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj8YZwpEbGdrcN5Y29ycA" class="cyc_term">IronOxide</a>. This collection does not include the chemical elements -- such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjIQpwpEbGdrcN5Y29ycA" class="cyc_term">Carbon</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjIyJwpEbGdrcN5Y29ycA" class="cyc_term">Oxygen</a>, since there can be multiple types that molecules can be formed out of a single element, e.g. O2 and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCj4pwpEbGdrcN5Y29ycA" class="cyc_term">Ozone</a>. Use the broader collection, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjNlZwpEbGdrcN5Y29ycA" class="cyc_term">ChemicalSubstanceType</a>, for substances which have a general chemical specification, that is, whose instances do not have exactly the same chemical composition but fall within certain specifications, e.g., <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWXHLJwpEbGdrcN5Y29ycA" class="cyc_term">DNAStuff</a>. chemical compound ChemicalCompoundTypeByChemicalSpecies type of temporal thing that is frequently for sale TemporallyExistingThingTypeFrequentlyForSale The collection of all types of things that are usually/frequently/always for sale. This is context dependent. alkane Alkane The most basic class of Hydrocarbons. Each subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rydvDMuzqQdaLvdv5ptfzVQ" class="cyc_term">Alkane</a> is a type of stuff whose carbon atoms are bonded to four other atoms. Subcollections include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwScGqJwpEbGdrcN5Y29ycA" class="cyc_term">Methane</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwRdbQJwpEbGdrcN5Y29ycA" class="cyc_term">Propane</a>. methane Methane CH4. A combustible gas produced either synthetically or by decomposing plant and animal matter. The main component of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkASpwpEbGdrcN5Y29ycA" class="cyc_term">NaturalGas</a>.