| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 24534-24534 | Identifier 是 Name 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2933-2933 | StandardIdentifier 是 Identifier 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2935-2935 | FormalIdentifier 是 Identifier 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3001-3001 | ProprietaryIdentifier 是 Identifier 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3003-3003 | ProductID 是 Identifier 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3020-3020 | PartyID 是 Identifier 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3026-3026 | EmployeeNumber 是 Identifier 的 subclass |
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