| http://www.w3.org/ns/prov#value | - Even if it were 50 states and 50 different sales tax rates that would be doable, but with many dozens of different sales tax venues with varying rates in New York alone, and plenty of states like Illiinois with a few cities that impose their own surtax to the state rate, figuring this crap out is a nightmare on the best of days.
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