| http://www.w3.org/ns/prov#value | - wherein X is S???, SO2 ???, SO3 ???, NHSO3 ???, POH???, PO2H???, PO3H??? or (PO3)2???; m is 0 or 1; n is 0 to 19; and R is R3, R1R3, R1???(CO2)???R3, R1???(CO2)???R2R3, R1???(CH2)p???R3, or R1???(CH2)p???R2R3, wherein R1 is a phenyl, a substituted phenyl, a biphenyl, a substituted biphenyl, a terphenyl, a substituted terphenyl, an aromatic ring, a non-aromatic ring, a cyclohexyl, a cyclopentyl, a
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