(subclass AerobicExerciseDevice RecreationOrExerciseDevice) | Mid-level-ontology.kif 8228-8228 | AerobicExerciseDevice est une sous-classe de RecreationOrExerciseDevice |
(subclass RowingMachine AerobicExerciseDevice) | Mid-level-ontology.kif 8237-8237 | RowingMachine est une sous-classe de AerobicExerciseDevice |