| http://www.w3.org/ns/prov#value | - Hence, in another aspect, there is a method of enabling a wireless information device to access data from several data service providers in which the method comprises the step of each of several applications resident on the device using at least in part a common, extensible schema which: [0017] (a) defines objects from each of the data service providers; and [0018] (b) permits each data service pr
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