About: http://webisa.webdatacommons.org/84799247

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	In 1818, the United States and Britain jointly occupied the Oregon Country, of which Washington was a part.
http://www.w3.org/ns/prov#wasQuotedFrom	loc.gov