PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This purification is critical because sulfur and other chemicals could poison the next step: the Fischer-Tropsch (FT) reaction.
http://www.w3.org/ns/prov#wasQuotedFrom
  • uky.edu