prov:value
| - For example, navigation system 308 may be a global positioning system (GPS) or any other similar navigation system such as those known in the art, including systems such as those described in the following: U.S. Pat. Nos. 5,781,156, 5,831,574, 5,884,214, 5,825,327, 5,945,944, 5,874,914, and 5,841,396 to Krasner, all of which are hereby incorporated by reference in their entirety.
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