| http://www.w3.org/ns/prov#value | - hosphoric acid (Hn+2PnO3n+1), where n is an integer up to 17, isohypophosphoric acid (H4P2O6), cyclo-trimetaphosphoric acid ((HPO3)3), phosphonic acid (H3PO3), cyclotetrametaphosphoric acid ((HPO3)4), diphosphonic acid (H4P2)5), polymetaphosphoric acid (HPO3)n, phosphinic acid (H3PO2), and anhydrous oxyacid.
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