| 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 2950-2950 | Alpha numeric ID string is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2965-2965 | Numeric ID string is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 2968-2968 | Alpha ID string is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3009-3009 | UP ccode is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3012-3012 | ISB ncode is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3015-3015 | ISMN is a subclass of formal identifier |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 3018-3018 | ISRC is a subclass of formal identifier |
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