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     <!ENTITY cyc  "http://sw.cyc.com/concept/" >
     <!ENTITY rdf  "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
     <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
     <!ENTITY xsd  "http://www.w3.org/2001/XMLSchema#" >
     <!ENTITY owl  "http://www.w3.org/2002/07/owl#" >
   ]>

<rdf:RDF xml:base="http://sw.opencyc.org/concept/"
         xmlns="http://sw.opencyc.org/concept/"
         xmlns:cycAnnot="http://sw.cyc.com/CycAnnotations_v1#"
         xmlns:rdf="&rdf;"
         xmlns:rdfs="&rdfs;"
         xmlns:owl="&owl;"
         xmlns:xsd="&xsd;">

  <owl:Ontology rdf:about="http://sw.opencyc.org/concept/">
    <owl:versionInfo>2009/04/07</owl:versionInfo>
    <rdfs:comment xml:lang="en">

       OpenCyc Knowledge Base

       Copyright© 2001-2009 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 &quot;Work&quot; 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.

       Mappings between OpenCyc terms and Wikipedia article names provided by
       Olena Medelyan and Catherine Legg, University of Waikato, NZ under a Creative 
       Commons Attribution 3.0 license.

    </rdfs:comment>
  </owl:Ontology>

  <owl:AnnotationProperty rdf:about="http://sw.cyc.com/CycAnnotations_v1#externalID">
    <rdfs:label xml:lang="en">externalID</rdfs:label>
    <rdfs:comment xml:lang="en">
      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.
    </rdfs:comment>
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#FunctionalProperty"/>
  </owl:AnnotationProperty>

  <owl:AnnotationProperty rdf:about="http://sw.cyc.com/CycAnnotations_v1#label">
    <rdfs:label xml:lang="en">label</rdfs:label>
    <rdfs:comment xml:lang="en">
      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.
    </rdfs:comment>
  </owl:AnnotationProperty>

  <owl:Class rdf:about="Mx4rvVkK35wpEbGdrcN5Y29ycA">
    <rdfs:label xml:lang="en">alkaloid</rdfs:label>
    <cycAnnot:label xml:lang="en">Alkaloid</cycAnnot:label>
    <rdfs:comment xml:lang="en">Instances are pieces of organic compounds composed of carbon, hydrogen, nitrogen, and usually oxygen, and are often derived from plants.  Though poisons, many alkaloids have physiological effects that render them useful as medicines or interesting as narcotics.  Some popular and notable alkaloids are curare, altropine, morphine, codeine, cocaine, caffeine, LSD, quinine, serotonin, strychnine, and nicotine.</rdfs:comment>
    <rdfs:subClassOf rdf:resource="Mx4rEcLG1ArWEdaAAABQ2sS97g"/>
    <rdfs:subClassOf rdf:resource="Mx4rvVjD0JwpEbGdrcN5Y29ycA"/>
    <rdf:type rdf:resource="Mx4rRn1i8PJ9QdaWb5oTir-gPg"/>
    <owl:sameAs rdf:resource="&cyc;Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <owl:sameAs rdf:resource="http://dbpedia.org/resource/Alkaloid"/>
    <owl:sameAs rdf:resource="http://umbel.org/umbel/sc/Alkaloid"/>
    <Mx4rwLSVCpwpEbGdrcN5Y29ycA xml:lang="en">alkaloids</Mx4rwLSVCpwpEbGdrcN5Y29ycA>
    <Mx4rTv-jk9SPTXa991kk5mAvHg>Alkaloid</Mx4rTv-jk9SPTXa991kk5mAvHg>
    <Mx4rNv0nbm4TTjOp7yhmnzOyqg>http://en.wikipedia.org/wiki/Alkaloid</Mx4rNv0nbm4TTjOp7yhmnzOyqg>
    <Mx4riWVFR6HJSpaEaHrcWS3MSA>http://www.w3.org/2006/03/wn/wn20/instances/synset-alkaloid-noun-1</Mx4riWVFR6HJSpaEaHrcWS3MSA>
  </owl:Class>

  <owl:Class rdf:about="Mx4rpGstkKtJQdeU6vbzp7nYdQ">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <rdfs:comment xml:lang="en">A chemical used to treat exposure to cholinesterase-inhibiting substances.</rdfs:comment>
    <cycAnnot:label xml:lang="en">Atropine</cycAnnot:label>
    <rdfs:label xml:lang="en">atropine</rdfs:label>
  </owl:Class>

  <owl:Class rdf:about="Mx4rvVkLnpwpEbGdrcN5Y29ycA">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <rdfs:comment xml:lang="en">An alkaloid used to make tonic and cure malaria.  Derived from the bark of the Cinchona tree.</rdfs:comment>
    <cycAnnot:label xml:lang="en">Quinine</cycAnnot:label>
    <rdfs:label xml:lang="en">quinine</rdfs:label>
  </owl:Class>

  <owl:Class rdf:about="Mx4rv2QkOJwpEbGdrcN5Y29ycA">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <cycAnnot:label xml:lang="en">Nicotine</cycAnnot:label>
    <rdfs:label xml:lang="en">nicotine</rdfs:label>
    <rdfs:comment xml:lang="en">A popular alkaloid stimulant, found in &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVisYZwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Tobacco&lt;/a&gt;</rdfs:comment>
  </owl:Class>

  <owl:Class rdf:about="Mx4rv2VFupwpEbGdrcN5Y29ycA">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <cycAnnot:label xml:lang="en">Cocaine</cycAnnot:label>
    <rdfs:comment xml:lang="en">&lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rv2VFupwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine&lt;/a&gt; is a naturally occurring substance present in the leaves of the &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVivSJwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;CocaPlant&lt;/a&gt;. Pharmacologically, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rv2VFupwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine&lt;/a&gt; has two prominent actions: it is a potent &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVoehJwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;LocalAnesthetic&lt;/a&gt;, and it is a powerful &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjC2pwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Stimulant&lt;/a&gt;. Psychotropically, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rv2VFupwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine&lt;/a&gt; inhibits the re-uptake of dopamine in the brain, causing alertness and heightened energy, a sense of euphoria, decreased anxiety and social inhibitions, and heightened sexuality. Side-effects include addiction, anxiety, depression, irritability, extreme fatigue, and possibly paranoia. &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rv2VFupwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine&lt;/a&gt; has been used in South America for more than 3,000 years and in the United States since the 19th century in a variety of forms: coca leaves, coca paste, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rwVg8HZwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine_Powder&lt;/a&gt;, and cocaine base (e.g., freebase and &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rwAhDipwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Cocaine_Crack&lt;/a&gt;).</rdfs:comment>
    <rdfs:label xml:lang="en">cocaine</rdfs:label>
  </owl:Class>

  <owl:Class rdf:about="Mx4rvVkLW5wpEbGdrcN5Y29ycA">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <rdfs:comment xml:lang="en">A popular alkaloid stimulant, found in tea, coffee, soft drinks, matte, and various other consumables.</rdfs:comment>
    <rdfs:label xml:lang="en">caffeine</rdfs:label>
    <cycAnnot:label xml:lang="en">Caffeine</cycAnnot:label>
  </owl:Class>

  <owl:Class rdf:about="Mx4rvjJH8pwpEbGdrcN5Y29ycA">
    <rdfs:subClassOf rdf:resource="Mx4rvVkK35wpEbGdrcN5Y29ycA"/>
    <cycAnnot:label xml:lang="en">Batrachotoxin</cycAnnot:label>
    <rdfs:comment xml:lang="en">A toxin that comes from the skin of the &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rQXYEYsQ_QdebN9AQ9Vu1nw&quot; class=&quot;cyc_term&quot;&gt;ColombianPoisonArrowFrog&lt;/a&gt;. It is one of the most poisonous toxic substances.</rdfs:comment>
    <rdfs:label xml:lang="en">batrachotoxin</rdfs:label>
  </owl:Class>

  <owl:Thing rdf:about="http://dbpedia.org/resource/Alkaloid">
    <rdfs:label xml:lang="en">alkaloid</rdfs:label>
    <cycAnnot:label xml:lang="en">Alkaloid</cycAnnot:label>
    <rdfs:comment xml:lang="en">Instances are pieces of organic compounds composed of carbon, hydrogen, nitrogen, and usually oxygen, and are often derived from plants.  Though poisons, many alkaloids have physiological effects that render them useful as medicines or interesting as narcotics.  Some popular and notable alkaloids are curare, altropine, morphine, codeine, cocaine, caffeine, LSD, quinine, serotonin, strychnine, and nicotine.</rdfs:comment>
  </owl:Thing>

  <owl:ObjectProperty rdf:about="Mx4rNv0nbm4TTjOp7yhmnzOyqg">
    <rdfs:label xml:lang="en">Wikipedia Article URL</rdfs:label>
    <rdfs:comment xml:lang="en">(&lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rNv0nbm4TTjOp7yhmnzOyqg&quot; class=&quot;cyc_term&quot;&gt;wikipediaArticleURL&lt;/a&gt; THING URL) means that in &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rtqXA6OC8QdiWC72DuLJdUw&quot; class=&quot;cyc_term&quot;&gt;Wikipedia_WebSite&lt;/a&gt; THING is described by an article located at URL</rdfs:comment>
    <cycAnnot:label xml:lang="en">wikipediaArticleURL</cycAnnot:label>
  </owl:ObjectProperty>

  <owl:ObjectProperty rdf:about="Mx4riWVFR6HJSpaEaHrcWS3MSA">
    <cycAnnot:label xml:lang="en">seeAlsoURI</cycAnnot:label>
    <rdfs:comment xml:lang="en">&lt;code&gt;(&lt;a href=&quot;http://sw.opencyc.org/concept/Mx4riWVFR6HJSpaEaHrcWS3MSA&quot; class=&quot;cyc_term&quot;&gt;seeAlsoURI&lt;/a&gt; &lt;b&gt;THING&lt;/b&gt; &lt;b&gt;URI&lt;/b&gt;)&lt;/code&gt; means that a description of the resource identified by URI is likely to contain information pertinent to THING.  This predicate is roughly equivalent to rdfs:seeAlso.</rdfs:comment>
    <rdfs:label xml:lang="en">See Also URI</rdfs:label>
  </owl:ObjectProperty>

  <owl:Class rdf:about="&cyc;Mx4rvVkK35wpEbGdrcN5Y29ycA">
    <rdfs:label xml:lang="en">alkaloid</rdfs:label>
    <cycAnnot:label xml:lang="en">Alkaloid</cycAnnot:label>
    <rdfs:comment xml:lang="en">Instances are pieces of organic compounds composed of carbon, hydrogen, nitrogen, and usually oxygen, and are often derived from plants.  Though poisons, many alkaloids have physiological effects that render them useful as medicines or interesting as narcotics.  Some popular and notable alkaloids are curare, altropine, morphine, codeine, cocaine, caffeine, LSD, quinine, serotonin, strychnine, and nicotine.</rdfs:comment>
  </owl:Class>

  <owl:ObjectProperty rdf:about="Mx4rwLSVCpwpEbGdrcN5Y29ycA">
    <rdfs:label xml:lang="en">Pretty String</rdfs:label>
    <rdfs:comment xml:lang="en">(&lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;prettyString&lt;/a&gt; TERM STRING) means that STRING is the English word or expression (sequence of words) commonly used to refer to TERM.  The predicate &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;prettyString&lt;/a&gt; is used by the code which generates CycL to English paraphrases, but its applicability is not restricted to this use.</rdfs:comment>
    <cycAnnot:label xml:lang="en">prettyString</cycAnnot:label>
  </owl:ObjectProperty>

  <owl:Class rdf:about="Mx4rRn1i8PJ9QdaWb5oTir-gPg">
    <rdfs:label xml:lang="en">polycompound chemical type</rdfs:label>
    <rdfs:comment xml:lang="en">The collection of all instances of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjNlZwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;ChemicalSubstanceType&lt;/a&gt; whose instances contain molecules of different instances of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvUCoPtoTQdaZVdw2OtjsAg&quot; class=&quot;cyc_term&quot;&gt;ChemicalCompoundTypeByChemicalSpecies&lt;/a&gt;.</rdfs:comment>
    <cycAnnot:label xml:lang="en">PolyCompoundChemicalType</cycAnnot:label>
  </owl:Class>

  <owl:Class rdf:about="Mx4rEcLG1ArWEdaAAABQ2sS97g">
    <rdfs:label xml:lang="en">base</rdfs:label>
    <cycAnnot:label xml:lang="en">ChemicallyBasicSubstance</cycAnnot:label>
    <rdfs:comment xml:lang="en">The collection of all chemically basic substances. An &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVny6pwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;ExistingStuffType&lt;/a&gt;.</rdfs:comment>
  </owl:Class>

  <owl:Thing rdf:about="http://umbel.org/umbel/sc/Alkaloid">
    <rdfs:label xml:lang="en">alkaloid</rdfs:label>
    <cycAnnot:label xml:lang="en">Alkaloid</cycAnnot:label>
    <rdfs:comment xml:lang="en">Instances are pieces of organic compounds composed of carbon, hydrogen, nitrogen, and usually oxygen, and are often derived from plants.  Though poisons, many alkaloids have physiological effects that render them useful as medicines or interesting as narcotics.  Some popular and notable alkaloids are curare, altropine, morphine, codeine, cocaine, caffeine, LSD, quinine, serotonin, strychnine, and nicotine.</rdfs:comment>
  </owl:Thing>

  <owl:ObjectProperty rdf:about="Mx4rTv-jk9SPTXa991kk5mAvHg">
    <cycAnnot:label xml:lang="en">wikipediaArticleName</cycAnnot:label>
    <rdfs:comment xml:lang="en">(&lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rTv-jk9SPTXa991kk5mAvHg&quot; class=&quot;cyc_term&quot;&gt;wikipediaArticleName&lt;/a&gt; THING NAME) means that in &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rtqXA6OC8QdiWC72DuLJdUw&quot; class=&quot;cyc_term&quot;&gt;Wikipedia_WebSite&lt;/a&gt; THING is described by an article with the title NAME</rdfs:comment>
    <rdfs:label xml:lang="en">Wikipedia Article Name</rdfs:label>
  </owl:ObjectProperty>

  <owl:Class rdf:about="Mx4rvVjD0JwpEbGdrcN5Y29ycA">
    <cycAnnot:label xml:lang="en">OrganicMaterial</cycAnnot:label>
    <rdfs:label xml:lang="en">organic substance</rdfs:label>
    <rdfs:comment xml:lang="en">A collection of tangible things.  Each instance of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjD0JwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;OrganicMaterial&lt;/a&gt; is a tangible thing composed of one or more types of organic &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjwspwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Molecule&lt;/a&gt;.  Instances of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjD0JwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;OrganicMaterial&lt;/a&gt; usually have their origin in the bodies (or other products) of living things.  Since some organic substances can be synthesized, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjD0JwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;OrganicMaterial&lt;/a&gt; is not a subcollection of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjVWpwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;NaturalTangibleStuff&lt;/a&gt;.  Chemically, instances of &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjD0JwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;OrganicMaterial&lt;/a&gt; have fairly (or very) complex carbon-based structures.  Examples include all instances of the collections &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjZ6ZwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Oil&lt;/a&gt;, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvWXHLJwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;DNAStuff&lt;/a&gt;, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVim-JwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Alcohol_Compound&lt;/a&gt;, &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvVjL-5wpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;Ivory&lt;/a&gt;, and &lt;a href=&quot;http://sw.opencyc.org/concept/Mx4rvViAHJwpEbGdrcN5Y29ycA&quot; class=&quot;cyc_term&quot;&gt;AnimalBodyPart&lt;/a&gt;.</rdfs:comment>
  </owl:Class>

</rdf:RDF>
