PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since lead is a highly toxic material, which may be volatilized at the 9 higher reaction temperatures and longer reaction times necessary for conventional reaction mixtures, the instant process permits a more economical and less hazardous operation.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com