| http://www.w3.org/ns/prov#value | - as vinyl (H2 C???CH--), allyl (H2 C???CH--CH2 --), propynyl (HC.tbd.C--CH2 --), and the like, substituted alkyl groups, preferably with from 1 to about 25 carbon atoms, aryl groups, preferably with from 6 to about 25 carbon atoms, such as phenyl, naphthyl, and the like, substituted aryl groups, preferably with from 6 to about 25 carbon atoms, arylalkyl groups, preferably with from 7 to about 25 c
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