assertion  retraction  graph  subject     predicate             object            datatype    annotation
1          0           graph  DOID:11615  oio:hasAlternativeId  DOID:11614        xsd:string  
1          0           graph  DOID:11615  oio:hasDbXref         ICD9CM:187.3      xsd:string  
1          0           graph  DOID:11615  rdf:type              owl:Class         _IRI        
1          0           graph  DOID:11615  oio:hasOBONamespace   disease_ontology  xsd:string