assertion  retraction  graph  subject          predicate        object                 datatype    annotation
1          0           graph  obo:CHEBI_50492  rdfs:label       thiocarbonyl compound  xsd:string  
1          0           graph  obo:CHEBI_50492  oio:id           CHEBI:50492            xsd:string  
1          0           graph  obo:CHEBI_50492  rdfs:subClassOf  obo:CHEBI_33261        _IRI        
1          0           graph  obo:CHEBI_50492  rdf:type         owl:Class              _IRI