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Term 1: Term 2:

(subclass OpticalDiscDrive DiskDrive) ComputerInput.kif 770-770
(subclass CDDrive OpticalDiscDrive) ComputerInput.kif 775-775
(subclass DVDDrive OpticalDiscDrive) ComputerInput.kif 779-779
(subclass BluRayDrive OpticalDiscDrive) ComputerInput.kif 783-783


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