PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • From your own source;The place of philosophy in physics was a theme to which Einstein returned time and again, it being clearly an issue of deep importance to him.I own the Pais bio, which says the same thing.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org