| http://www.w3.org/ns/prov#value | - cals, R3 is selected from the group consisting of monovalent hydrocarbon radicals having from 1 to 18 carbon atoms, alkoxy radicals having from 1 to 18 carbon atoms and OSi(R4)3 radicals, R4 is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, R5 is a monovalent radical selected from the group consisting of O0.5 Si(R4)3 and O0.5 R4, where R4 is the same as above, and when R is cat
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