| http://www.w3.org/ns/prov#value | - Further, the structure may be arranged such that, when map information including coordinate information of the keyword-related data 410 is displayed by the navigation device, i.e., when map information including a location point such as a restaurant related to the keyword-related data 410 is displayed, a related BML file 412 or related main data 413 of the keyword-related data 410 having the coord
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