PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • We will also explore some of the obstacles researchers face to make fuel cells practical and affordable for our use, and we will discuss the potential applications of fuel cells.If you want to be technical about it, a fuel cell is an electrochemical energy conversion device.
http://www.w3.org/ns/prov#wasQuotedFrom
  • howstuffworks.com