type: seq sequence: - type: map mapping: "relation": type: str required: true "namespaces": type: seq required: true sequence: - type: str required: true pattern: /[0-9a-zA-Z\_]+(\:[0-9]{7})?/ "primary_root_terms": type: seq required: true sequence: - type: str required: true pattern: /[0-9a-zA-Z\_]+\:[0-9]{7}?/ "cardinality": type: number required: false