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    xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    xmlns:daml="http://www.daml.org/2001/03/daml+oil#"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:p2="http://www.owl-ontologies.com/assert.owl#"
    xmlns="http://ontologies.ncgr.org/MO/" >
  <rdf:Description rdf:about="http://ontologies.ncgr.org/MO/RadiationUnit">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <rdfs:comment rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Units for measuring decay of a radioactive isotope over time.</rdfs:comment>
    <class_role rdf:datatype="http://www.w3.org/2001/XMLSchema#string">concrete</class_role>
    <rdfs:subClassOf rdf:resource="http://ontologies.ncgr.org/MO/OtherUnit"/>
    <unique_identifier rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MO_204</unique_identifier>
    <class_source rdf:datatype="http://www.w3.org/2001/XMLSchema#string">ontology</class_source>
  </rdf:Description>
  <rdf:Description rdf:about="http://ontologies.ncgr.org/MO/">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Ontology"/>
    <owl:imports rdf:resource="http://ontologies.ncgr.org/MO/owlOntology"/>
  </rdf:Description>
</rdf:RDF>