assertion  retraction  graph  subject              predicate        object               datatype  annotation
1          0           graph  obo:FOODON_00002244  rdfs:label       snail food product   @en       
1          0           graph  obo:FOODON_00002244  rdfs:subClassOf  obo:FOODON_00002044  _IRI      
1          0           graph  obo:FOODON_00002244  rdf:type         owl:Class            _IRI