Add `identifier` in addition to `@id` for performers discovered in data. E.g. a unique entry of "Alice" in the identity column should yield `"@id": "_:pAlice", "identifier": "Alice"` Related to #51
Add
identifierin addition to@idfor performers discovered in data.E.g. a unique entry of "Alice" in the identity column should yield
"@id": "_:pAlice", "identifier": "Alice"Related to #51