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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	is suitable in many situations, but the approach can lack such attributes as speed, versatility, and ease of use, such as for target molecules that are inherently difficult to first derivatize.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com