| http://www.w3.org/ns/prov#value | - ??? the sites on which the data is synced are limited number, in most of the cases these are not all the sites where the data is wrong, and there are many VERY important data providers and citation sites (for Google) that are missing (Yellowpages.com probably being the most notable example, to which I could add InsiderPages, Kudzu, DexKnows, MagicYellow, Manta, Brownbook, etc)
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