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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	others are hydrogen atom, or R.sup.2 or R.sup.3 is a halogen atom, a lower alkyl group or a lower alkoxyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com