About: http://webisa.webdatacommons.org/137724767

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	Though the whole letter is worthy of a close read, the following paragraph especially got my attention:
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com