| http://www.w3.org/ns/prov#value | - (b) --R.sup.8 --WY in which R.sup.8 is as defined under the definition for R.sup.2, and Y is an ethylenically unsaturated acryl group selected from the group including acryloyl, methacryloyl, cinnamoyl, maleoyl, fumaroyl, itaconoyl and crotonoyl,
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