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Term 1: Term 2:

(subclass ComputerDisk DigitalDataStorageDevice) ComputerInput.kif 657-657 Computer disk is a subclass of digital data storage device
(subclass HardDisk ComputerDisk) ComputerInput.kif 665-665 Hard disk is a subclass of computer disk
(subclass RemovableDisk ComputerDisk) ComputerInput.kif 682-682 Removable disk is a subclass of computer disk


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