| http://www.w3.org/ns/prov#value | - If the content reproduction apparatus 20 is service-registered already (for example, if the device ID is stored in the pertaining registration record or in a like case), then when a content processing apparatus 10 owned by the same user is to be service-registered, the service registration can be executed efficiently even if user information such as a user ID and a password is not inputted intenti
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