assertion  retraction  graph  subject    predicate    object                                                                                                                                                                                                         datatype    annotation
1          0           graph  DOID:7578  IAO:0000115  A breast carcinoma that is characterized by the presence of hard, fibrous, particularly invasive tumors in which the malignant cells occur singly or in small clusters or strands in dense connective tissue.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3132957/""}]}"