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Term 1: Term 2:

(=>
    (instance ?PE ProtectiveEyewear)
    (hasPurpose ?PE
        (=>
            (exists (?PERSON)
                (and
                    (instance ?PERSON Human)
                    (wears ?PERSON ?PE)))
            (exists (?PROTECT ?EYE ?INJ ?I ?T)
                (and
                    (instance ?PROTECT Process)
                    (instrument ?PROTECT ?PE)
                    (subclass ?INJ
                        (KappaFn ?I
                            (exists (?HUMAN)
                                (and
                                    (instance ?I Injuring)
                                    (instance ?EYE Eye)
                                    (instance ?HUMAN Human)
                                    (properPart ?EYE ?HUMAN)
                                    (patient ?I ?EYE)
                                    (=>
                                        (holdsDuring ?T
                                            (patient ?I ?PERSON))
                                        (not
                                            (holdsDuring ?T
                                                (patient ?PROTECT ?PERSON))))))))
                    (prevents ?PROTECT ?INJ))))))		 Cars.kif 3490-3517
(subclass ProtectiveEyewear SafetyDevice) Cars.kif 3486-3486 ProtectiveEyewear est une sous-classe de SafetyDevice
(subclass ProtectiveEyewear WearableItem) Cars.kif 3487-3487 ProtectiveEyewear est une sous-classe de WearableItem


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