assertion  retraction  graph  subject    predicate            object               datatype    annotation
1          0           graph  DOID:4550  rdfs:label           anal gland neoplasm  xsd:string  
1          0           graph  DOID:4550  oio:id               DOID:4550            xsd:string  
1          0           graph  DOID:4550  oio:hasOBONamespace  disease_ontology     xsd:string  
1          0           graph  DOID:4550  oio:hasDbXref        UMLS_CUI:C0002757    xsd:string  
1          0           graph  DOID:4550  oio:hasDbXref        MESH:D000694         xsd:string  
1          0           graph  DOID:4550  rdfs:subClassOf      DOID:4551            _IRI        
1          0           graph  DOID:4550  rdf:type             owl:Class            _IRI