assertion  retraction  graph  subject    predicate            object                                      datatype     annotation
1          0           graph  DOID:3378  owl:deprecated       true                                        xsd:boolean  
1          0           graph  DOID:3378  rdfs:label           obsolete conventional central osteosarcoma  xsd:string   
1          0           graph  DOID:3378  oio:id               DOID:3378                                   xsd:string   
1          0           graph  DOID:3378  oio:hasOBONamespace  disease_ontology                            xsd:string   
1          0           graph  DOID:3378  rdfs:subClassOf      owl:Thing                                   _IRI         
1          0           graph  DOID:3378  rdf:type             owl:Class                                   _IRI