assertion  retraction  graph  subject    predicate            object                 datatype    annotation
1          0           graph  DOID:2781  rdfs:label           rectosigmoid cancer    xsd:string  
1          0           graph  DOID:2781  oio:inSubset         obo:doid#NCIthesaurus  _IRI        
1          0           graph  DOID:2781  oio:id               DOID:2781              xsd:string  
1          0           graph  DOID:2781  oio:hasOBONamespace  disease_ontology       xsd:string  
1          0           graph  DOID:2781  oio:hasDbXref        UMLS_CUI:C1327709      xsd:string  
1          0           graph  DOID:2781  oio:hasDbXref        NCI:C7421              xsd:string  
1          0           graph  DOID:2781  rdfs:subClassOf      DOID:2782              _IRI        
1          0           graph  DOID:2781  rdf:type             owl:Class              _IRI