PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Pax Britannica era also saw the enforced opening of key markets to European, particularly British, commerce: Turkey and Egypt in 1838, Persia in 1841, China in 1842 with the First Opium War, and Japan in 1858 leading to the Meiji period.
http://www.w3.org/ns/prov#wasQuotedFrom
  • reference.com