assertion  retraction  graph  subject    predicate    object                                                                                                            datatype    annotation
1          0           graph  DOID:4687  IAO:0000115  A thyroid gland carcinoma that is composed of groups of squamoid and mucous cells, surrounded by fibrous tissue.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007636""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C38762""}]}"