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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	(where R1, R2, R3a and n are as hereinbefore defined and X represents a leaving group such as a halogen atom, e.g. fluorine, chlorine, bromine or iodine).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com