PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Freeman collaborated in this research with colleagues at both The University of Texas at Austin and the Research Triangle Institute in Research Triangle Park, N.C. Hydrogen is commonly generated from natural gas in a process called steam reforming, wherein treatments with hot steam convert methane into a gaseous mixture consisting of mainly carbon dioxide (CO2), carbon monoxide (CO) and hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sciencedaily.com