assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_26835  rdfs:label       sulfur molecular entity  xsd:string  
1          0           graph  obo:CHEBI_26835  oio:id           CHEBI:26835              xsd:string  
1          0           graph  obo:CHEBI_26835  rdfs:subClassOf  obo:CHEBI_33304          _IRI        
1          0           graph  obo:CHEBI_26835  rdf:type         owl:Class                _IRI