| http://www.w3.org/ns/prov#value | - entering a standby mode of the system when a main body of the system is turned on; reading data from a picture book cartridge inserted in the main body of the system; outputting to an audio/visual output unit a starting visual display including an icon for each displayable page of the picture book at a fixed predetermined position on the audiovisual output unit, and outputting sound corresponding
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