| http://www.w3.org/ns/prov#value | - alkenyl, alkoxy, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, aryloxy, heteroaryl, heteroaryloxy, aralkyl, aralkyloxy, heteroaralkyl, aralkenyl and heteroaralkenyl in turn are unsubstituted or substituted by one of the above-mentioned substituents; and y is 1 and M is a monovalent metal or y is ??? and M is a divalent metal.
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