PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Personally, I am a big fan of Google Apps, but you will still have implementation issues, i.e. no matter what the tool, getting the implementation right is your biggest challenge, and getting teachers to keep things up to date is important.
http://www.w3.org/ns/prov#wasQuotedFrom
  • metafilter.com