(subclass Window Artifact) | Mid-level-ontology.kif 15171-15171 | Window is a subclass of artifact |
(subclass VehicleWindow Window) | Mid-level-ontology.kif 3442-3442 | Vehicle window is a subclass of window |
(subclass Skylight Window) | Mid-level-ontology.kif 15190-15190 | Skylight is a subclass of window |