About: http://webisa.webdatacommons.org/31091528

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	Each year, our staff serves our visitors billions of letters, photographs, video and audio recordings, drawings, maps, treaties, posters, and other items that we have preserved.
http://www.w3.org/ns/prov#wasQuotedFrom	archives.gov