| appearance as argument number 1 |
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| (subclass HardDiskDrive DiskDrive) | ComputerInput.kif 762-762 | Hard disk drive is a subclass of disk drive |
| (subclass HardDiskDrive ComputerComponent) | QoSontology.kif 76-76 | Hard disk drive is a subclass of computer component |
| (subclass HardDiskDrive DigitalDataStorageDevice) | QoSontology.kif 77-77 | Hard disk drive is a subclass of digital data storage device |
| (documentation HardDiskDrive EnglishLanguage "The primary computer storage medium, which is made of one or more aluminum or glass platters, coated with a ferromagnetic material. Most hard disks are fixed disks, which are permanently sealed in the drive.") | QoSontology.kif 78-81 | Hard disk drive is a subclass of digital data storage device |
| appearance as argument number 2 |
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| antecedent |
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| (=> (instance ?HardDrive HardDiskDrive) (unitMeasuringPerformance ?HardDrive BitsPerSecond)) |
QoSontology.kif 956-958 | If X is an instance of hard disk drive, then bits per second is an unit measuring performance of X |
| consequent |
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| (=> (instance ?DISK InternalHardDisk) (exists (?DRIVE) (and (instance ?DRIVE HardDiskDrive) (component ?DISK ?DRIVE)))) |
ComputerInput.kif 675-680 | If X is an instance of internal hard disk, then there exists Y such that Y is an instance of hard disk drive and X is a component of Y |
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