assertion  retraction  graph  subject    predicate            object                   datatype    annotation
1          0           graph  DOID:3374  rdfs:label           peripheral osteosarcoma  xsd:string  
1          0           graph  DOID:3374  oio:inSubset         obo:doid#NCIthesaurus    _IRI        
1          0           graph  DOID:3374  oio:id               DOID:3374                xsd:string  
1          0           graph  DOID:3374  oio:hasOBONamespace  disease_ontology         xsd:string  
1          0           graph  DOID:3374  oio:hasExactSynonym  Surface Osteosarcoma     @en         
1          0           graph  DOID:3374  oio:hasDbXref        UMLS_CUI:C1332591        xsd:string  
1          0           graph  DOID:3374  oio:hasDbXref        NCI:C7134                xsd:string  
1          0           graph  DOID:3374  rdfs:subClassOf      DOID:3376                _IRI        
1          0           graph  DOID:3374  rdf:type             owl:Class                _IRI