assertion  retraction  graph  subject          predicate        object              datatype    annotation
1          0           graph  obo:CHEBI_47016  rdfs:label       tetrahydrofuranone  xsd:string  
1          0           graph  obo:CHEBI_47016  oio:id           CHEBI:47016         xsd:string  
1          0           graph  obo:CHEBI_47016  rdfs:subClassOf  obo:CHEBI_26912     _IRI        
1          0           graph  obo:CHEBI_47016  rdf:type         owl:Class           _IRI