PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • During that time, he started learning about alternative energy sources and became particularly interested in hydrogen fuel cells. ??Once I got out of college, he said, I started reading more, getting interested in the goings-on of the world and wondering what I could do to help.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org