| http://www.w3.org/ns/prov#value | - in which R5 can be an alkyl, alkenyl or other aliphatic group, or an alkyl-aryl group of from 8 to 20 or from 12 to 14 carbon atoms, EO is oxyethylene, PO is oxypropylene, s is 1-20, 2-12, or 2 to 5, t is 1-20, 1-10, 2-12, or 2-5, and u is 1-20, 1-10, 2-12, or 2-5.
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