About: http://webisa.webdatacommons.org/79713196

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	I can not think of any examples right now, but there is tons of letters, diaries, and other stuff that was meant to be private that tell us things we never would have known without them.
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com