PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Mail 7.0 has its problems, especially if you use it with Gmail, and whether Apple will fix those problems or not remains to be seen. (After all, Google and Apple are rivals, and the two have had issues.
http://www.w3.org/ns/prov#wasQuotedFrom
  • macworld.com