assertion  retraction  graph  subject   predicate      object        datatype    annotation
1          0           graph  DOID:468  oio:hasDbXref  MESH:D006391  xsd:string  
1          0           graph  DOID:277  oio:hasDbXref  MESH:D006391  xsd:string  
1          0           graph  DOID:255  oio:hasDbXref  MESH:D006391  xsd:string  
1          0           graph  DOID:474  oio:hasDbXref  MESH:D006391  xsd:string