| http://www.w3.org/ns/prov#value | - R is not limited to these unsubstituted monovalent hydrocarbon groups and alkoxy groups, but includes substituted ones of these groups wherein some or all of the hydrogen atoms each attached to a carbon atom are replaced by halogen atoms, cyano groups, alkoxy groups or the like, for example, substituted hydrocarbon groups such as chloromethyl, 3,3,3-trifluoropropyl, and cyanoethyl and substituted
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