About: http://webisa.webdatacommons.org/244759245

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	documents, especially since there were plenty of old letters and other papers
http://www.w3.org/ns/prov#wasQuotedFrom	adl.org