| http://www.w3.org/ns/prov#value | - The storage unit 22 includes, for example, a read only memory such as a ROM, a high speed random access memory such as a RAM, and a large capacity random access memory such as a hard disk drive, and is used for storing programs and various data as well as a temporary working area for executing the programs. [0105] The display unit 23 is, for example, a display device having a CRT (Cathode-Ray Tube
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