PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Like other C4s, isobutylene is facing a structural shortage because US crackers are switching from oil-based naphtha to ethane, propane and other natural gas liquids (NGLs).
http://www.w3.org/ns/prov#wasQuotedFrom
  • icis.com