| http://www.w3.org/ns/prov#value | - mp3-players, cameras, cell phones and other hand-held devices have become an essential part of our lifestyles. with that comes the need to constantly recharge and make sure those mobile devices are ready to use at any time. because these gadgets need to be frequently recharged, there is a tendency for users to leave those chargers plugged into the wall which not only consumes a lot of electricity,
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