| http://www.w3.org/ns/prov#value | - the client side via the network. [0085] In step S602, the CPU 2 checks whether the request from this client is a session for the first time. [0086] If the request is from a client that has already started a session, session id (identifying information) is added to the data obtained in step S601. [0087] If the CPU 2 determines in step S602 that the request is the first session, the flow branches to
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