About: http://webisa.webdatacommons.org/15550262

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	Then, look at the kinds of things that get said in the collective letter, such as this:
http://www.w3.org/ns/prov#wasQuotedFrom	talkingphilosophy.com