assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4511 IAO:0000115 An angiosarcoma and sarcoma of breast and vascular neoplasm of breast that is located_in the cells that line the blood vessels within the breast or underarm area. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://breastcancer.about.com/od/types/p/angiosarcoma.htm""}]}"