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Term 1: Term 2:

(subclass Magnet Object) Cars.kif 3866-3866 子類 Magnet and Object
(subclass NaturalMagnet Magnet) Cars.kif 3880-3880 子類 NaturalMagnet and Magnet
(subclass Electromagnet Magnet) Cars.kif 3886-3886 子類 Electromagnet and Magnet


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