| http://www.w3.org/ns/prov#value | - (B), (C) and (D) --O--R.sup.3--O-- (6) wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms and may contain at least one selected from the group consisting of O, N, and S atoms, said repeating units (A), (B), (C) and (D) being bonded with
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