| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 24534-24534 | Identifier is a subclass of name |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2933-2933 | Standard identifier is a subclass of identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2935-2935 | Formal identifier is a subclass of identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3001-3001 | Proprietary identifier is a subclass of identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3003-3003 | Product iD is a subclass of identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3020-3020 | Party ID is a subclass of identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3026-3026 | Employee number is a subclass of identifier |
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