| http://www.w3.org/ns/prov#value | - I think those who are interested in this question may also be interested in this paper and have useful input to give: comments are most welcome. (Note also that, if this answer is an advertisement for my work on MO, the favor is returned in the paper: Bjorn's answer is cited there.) share|improve this answer answered Sep 6 '10 at 16:42
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