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Relationships : (Hosted/Volcanic_Vents)

{"relationships": [
 {
  "destinationLayerId": 2,
  "attributed": false,
  "composite": false,
  "originLayerId": 0,
  "name": "",
  "backwardPathLabel": "GEOL_VENTS_VENT_LOCATIONS",
  "rules": [],
  "originPrimaryKey": "vent_id",
  "forwardPathLabel": "GEOL_VENTS_CITATION_CODES",
  "id": 0,
  "originForeignKey": "vent_id",
  "cardinality": "esriRelCardinalityOneToMany"
 },
 {
  "destinationLayerId": 1,
  "attributed": false,
  "composite": false,
  "originLayerId": 2,
  "name": "",
  "backwardPathLabel": "GEOL_VENTS_CITATION_CODES",
  "rules": [],
  "originPrimaryKey": "source_code",
  "forwardPathLabel": "GEOL_VENTS_CITATIONS",
  "id": 1,
  "originForeignKey": "source_code",
  "cardinality": "esriRelCardinalityOneToMany"
 }
]}