| http://www.w3.org/ns/prov#value | - The personal computer 40 further includes a hard disk drive 47 for reading from and writing to a hard disk, not shown, a magnetic disk drive 48 for reading from or writing to a removable magnetic disk 49, and an optical disk drive 50 for reading from or writing to removable optical disk 51 such as a CD ROM or other optical media.
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