(subclass ElectricalSignalling Signalling) | Mid-level-ontology.kif 2635-2635 | ElectricalSignalling est une sous-classe de Signalling |
(subclass ElectronicSignalling ElectricalSignalling) | Mid-level-ontology.kif 2647-2647 | ElectronicSignalling est une sous-classe de ElectricalSignalling |