| http://www.w3.org/ns/prov#value | - The search subject groups 114 a???114 k shown in FIG. 9 also comprise corresponding options control 118 a???118 k, such as to add or subtract desired source choices 116, and/or to select options based upon a source 16, such as to select a desired rating level of lodging, e.g. 4 stars, based upon a selected source 16.
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