PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • During the 1950s, historians including John Fairbank and Joseph Needham popularized the idea that after Zheng's voyages, China turned away from the seas and underwent a period of technological stagnation.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newworldencyclopedia.org