PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • High school students can explore such environmental issues as global warming, acid rain, hazardous waste, conservation, and ecological indicators at the High School Environmental Center.
http://www.w3.org/ns/prov#wasQuotedFrom
  • educationworld.com