| http://www.w3.org/ns/prov#value | - An example of such a game system is a game machine, such as that described in Japanese Patent Publication No. 10-63364A, wherein a predetermined server collectively manages the game playing rights to cause the game machine to execute a game program only to a specified extent (or a specified number of times or for only a specified time period), and wherein a bill corresponding to the extent to whic
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