assertion  retraction  graph  subject              predicate        object                           datatype  annotation
1          0           graph  obo:FOODON_00001257  rdfs:label       milk or milk based food product  @en       
1          0           graph  obo:FOODON_00001257  rdfs:subClassOf  obo:FOODON_00001256              _IRI      
1          0           graph  obo:FOODON_00001257  rdf:type         owl:Class                        _IRI