assertion  retraction  graph  subject    predicate    object                                                                                                                                                                                                      datatype    annotation
1          0           graph  DOID:5670  IAO:0000115  A ductal carcinoma in situ that is characterized by the presence of comedo-type of tumor cell necrosis in which the necrotic areas are surrounded by a solid proliferation of malignant pleomorphic cells.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007636""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.cancer.gov/dictionary/?CdrID=44330""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C4188""}]}"