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Term 1: Term 2:

(=>
    (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 ist eine teilkategorie von TransportationDevice


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