WheelChock - Sigma Knowledge base Browser

appearance as argument number 1

(documentation WheelChock EnglishLanguage "A Device that is designed to keep a Vehicle's Wheels, and thus the vehicle itself, from moving.")	Cars.kif 4379-4380
(subclass WheelChock Device)	Cars.kif 4377-4377	Wheel chock is a subclass of device

appearance as argument number 2

(termFormat EnglishLanguage WheelChock "wheel chock")

Cars.kif 4378-4378

antecedent

(=>
    (instance ?WC WheelChock)
    (hasPurpose ?WC
        (exists (?W ?T)
            (and
                (instance ?W Wheel)
                (holdsDuring ?T
                    (and
                        (meetsSpatially ?WC ?W)
                        (not
                            (exists (?R)
                                (and
                                    (instance ?R Rotating)
                                    (patient ?R ?W))))))))))

Cars.kif 4382-4395

If a physical is an instance of wheel chock,
then the physical has the purpose there exist an entity and another entity such that the entity is an instance of wheel and the physical meets the entity and there doesn't exist a third entity such that the third entity is an instance of rotating and the entity is a patient of the third entity holds during the other entity

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