| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 25059-25059 | 子類 FixedPhone and 電話 |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 73-73 | 子類 CordedTelephone and FixedPhone |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 89-89 | 子類 CordlessTelephone and FixedPhone |
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