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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	allows users to know how a message is composed, e.g. if it contains attachments to be
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com