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Advances in hardware management, network protocols, operating systems, and applications are promoting large-scale deployment of Wireless Sensor Networks (WSNs). However, the challenge still remains to optimize the use of available computing, communication, and power resources while fulfilling data collection tasks. We think that exploiting a broader range of the networkpsilas intrinsic properties can be helpful in providing users with the right data, at the right time, using the right sensors deployed in the right spatial areas. To this end, in this paper we propose a Sensor Observation Service server agent that uses semantic, logical, and physical connections between sensors in order to create a Data Gathering Network (DGN) on-the-fly that can better adapt to network changes and provide adjustable services to clients of the network.