| appearance as argument number 1 |
|
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 242-244 | |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 241-241 | FM radio system is a subclass of radio system |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 24446-24446 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 24445-24445 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 24444-24444 |
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