assertion  retraction  graph  subject   predicate                                         object        datatype    annotation
1          0           graph  DOID:848  <http://www.w3.org/2004/02/skos/core#exactMatch>  MESH:D001168  xsd:string  
1          0           graph  DOID:848  oio:hasDbXref                                     MESH:D001168  xsd:string