model/knowledge_graph/relation2id.json

{
  "REPORT_OF": 0,
  "HAS_NORMAL": 1,
  "HAS_FINDING": 2,
  "HAS_SYMPTOM": 3,
  "HAS_DISEASE": 4,
  "MAPPED_TO_DOID": 5,
  "is_a": 6,
  "SYNONYM_OF": 7,
  "XREF": 8
}