PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although the method certainly turned out the drug, it was highly inefficient and produced unwanted by-products at each step of the way: an annual production of 30 million pounds of ibuprofen generated 45 million pounds of waste, mostly tossed for scrap.
http://www.w3.org/ns/prov#wasQuotedFrom
  • chemheritage.org