| (subclass Clock MeasuringDevice) | Mid-level-ontology.kif 2882-2882 | Clock est une sous-classe de MeasuringDevice |
| (subclass WatchClock Clock) | Mid-level-ontology.kif 2894-2894 | WatchClock est une sous-classe de Clock |
| (subclass AlarmClock Clock) | Mid-level-ontology.kif 25525-25525 | AlarmClock est une sous-classe de Clock |
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