http://www.w3.org/ns/prov#value | - cted by Boolean logic in an embodiment of the present invention; and FIG. 26 is a flow chart illustrating an example of a search query in the form of a natural language sentence. (III) FIG. 27 is a drawing illustrating the fundamental principle of the present invention; FIG. 28 is a block diagram of a system on which the present invention is applied; FIG. 29 is a block diagram of the semantic dict
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