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    xmlns:daml="http://www.daml.org/2001/03/daml+oil#"
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    xmlns="http://ontologies.ncgr.org/MO/" >
  <rdf:Description rdf:about="http://ontologies.ncgr.org/MO/SoftwareVariation">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <unique_identifier rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MO_222</unique_identifier>
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    <class_role rdf:datatype="http://www.w3.org/2001/XMLSchema#string">place_holder</class_role>
    <rdfs:subClassOf rdf:resource="http://ontologies.ncgr.org/MO/MethodologicalFactorCategory"/>
    <rdfs:comment rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The effects of different software, software packages, or software versions on experimental results are studied.</rdfs:comment>
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    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Ontology"/>
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