PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This material is mostly landfilled in the U.S., as recovery of residual metals from SR was difficult and recovery and recycling of the plastics was difficult and legally risky because of unclear regulations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • recyclingtoday.com