prov:value
| - e, and each a is independently an integer of 0 to 3; D is selected from the group consisting of a single bond and arylene; and E is a divalent linking group selected from the group consisting of a single bond, ???O???, ???S???, ???C(O)???, ???S(O)???, ???S(O2)???, ???W???, ???(???O???W???)m-O- (m is an integer of 1 to 3), and -Q- [in the formulae, W is a divalent group selected from the group cons
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