PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The recently discovered Darwin's bark spider, she notes, spins the largest webs in the world, and its silk is the toughest biological material ever studied???more than ten times hardier than Kevlar.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org