| http://www.w3.org/ns/prov#value | - Thus, in the RC request processing period 2206, user A indicates his availability status to the presence server and RC request and RC response are communicated between the RC server and user A. During the query pending RC request period 2220, the request for the pending RC list involving user A and the response with the RC list involving user A are communicated between user A and the RC server as
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