PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ophthotech isn???t the only company to target PDGF???a startup in Waltham, MA called Kala Pharmaceuticals is developing a drug, for example, that blocks both VEGF and PDGF???but Ophthotech is the farthest along in development.
http://www.w3.org/ns/prov#wasQuotedFrom
  • xconomy.com