PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ralph Wiley accidentally discovered polyvinylidene chloride in 1933.[1] He, then, was a college student who worked part-time at Dow Chemical lab as a dishwasher.[2] While cleaning laboratory glassware, he came across a vial he could not scrub clean.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org