(=> (and (instance ?SKI SnowSki) (material ?MAT ?SKI)) (or (subclass ?MAT Metal) (subclass ?MAT Wood) (subclass ?MAT Plastic))) |
Sports.kif 1040-1047 | |
(subclass SnowSki TransportationDevice) | Sports.kif 1035-1035 | SnowSki est une sous-classe de v�hicule de transport |