[ { "assertion": 1, "retraction": 0, "graph": "graph", "subject": "DOID:12531", "predicate": "IAO:0000115", "object": "A blood coagulation disease that is a hereditary abnormality which slows the blood clotting process. It arises from a qualitative or quantitative deficiency of von Willebrand factor (vWF), a multimeric protein that is required for platelet adhesion.", "datatype": "xsd:string", "annotation": "{\"dce:type\":[{\"datatype\":\"_IRI\",\"meta\":\"owl:Axiom\",\"object\":\"obo:ECO_0007637\"},{\"datatype\":\"_IRI\",\"meta\":\"owl:Axiom\",\"object\":\"obo:ECO_0007638\"}],\"oio:hasDbXref\":[{\"datatype\":\"xsd:string\",\"meta\":\"owl:Axiom\",\"object\":\"url:http://en.wikipedia.org/wiki/Von_Willebrand_disease\"},{\"datatype\":\"xsd:string\",\"meta\":\"owl:Axiom\",\"object\":\"url:http://ghr.nlm.nih.gov/condition/von-willebrand-disease\"}]}" } ]