assertion  retraction  graph  subject    predicate    object                                                                                             datatype    annotation
1          0           graph  DOID:2557  IAO:0000115  A cartilage disease that is characterized by softening and breakdown of cartilage inside a joint.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.health.harvard.edu/a_to_z/chondromalacia-a-to-z""}]}"