(subclass UnskilledOccupation ManualLabor) | Mid-level-ontology.kif 8278-8278 | UnskilledOccupation est une sous-classe de ManualLabor |
(subclass Janitor UnskilledOccupation) | Mid-level-ontology.kif 20641-20641 | Janitor est une sous-classe de UnskilledOccupation |