(=> (and (instance ?SKI SnowSki) (material ?MAT ?SKI)) (or (subclass ?MAT Metal) (subclass ?MAT Wood) (subclass ?MAT Plastic))) |
Sports.kif 1040-1047 |
|
(subclass Wood Tissue) | Mid-level-ontology.kif 9161-9161 | Wood is a subclass of tissue |
(subclass Wood PlantSubstance) | Mid-level-ontology.kif 9162-9162 | Wood is a subclass of plant substance |