| http://www.w3.org/ns/prov#value | - Said alkenyl group includes, for example, an alkenyl group having 2 to 10 carbon atoms, such as vinyl, allyl, propenyl, isopropenyl, butenyl, isobutenyl, hexenyl and cyclohexenyl; and typically an alkenyl group having 2 to 4 carbon atoms, such as vinyl, allyl and butenyl groups.
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