| (=> (and (instance ?SKI SnowSki) (material ?MAT ?SKI)) (or (subclass ?MAT Metal) (subclass ?MAT Wood) (subclass ?MAT Plastic))) |
Sports.kif 1040-1047 | |
| (subclass Plastic Hydrocarbon) | Mid-level-ontology.kif 9195-9195 | Plastic est une sous-classe de Hydrocarbon |
| (subclass SyntheticWicker Plastic) | Mid-level-ontology.kif 4601-4601 | SyntheticWicker est une sous-classe de Plastic |
| (subclass Polypropylene Plastic) | Mid-level-ontology.kif 9202-9202 | Polypropylene est une sous-classe de Plastic |
| (subclass Polystyrene Plastic) | Mid-level-ontology.kif 9209-9209 | Polystyrene est une sous-classe de Plastic |
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