| http://www.w3.org/ns/prov#value | - (1) providing, for at least some of the databases, a global cache including information to enable agents to access the databases; (2) originating a request through a coordinating node, the coordinating node sending information on the variation to be executed to remote nodes; (3) having each remote node receive the request and check the global cache on the respective remote node for a current varia
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