assertion retraction graph subject predicate object datatype annotation 1 0 graph obo:DISDRIV_0000000 IAO:0000115 Environmental or genetic mechanisms driving the occurrance of complex diseases. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC4517741/""}]}"