| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 2628-2628 | ElectricalSignalling est une sous-classe de Signalling |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 2640-2640 | ElectronicSignalling est une sous-classe de ElectricalSignalling |
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