About: http://webisa.webdatacommons.org/277332727

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In order to differentiate between the contributions of each person in a group working together on the same diagram, the invention has foreseen personal pointing devices, for example pens, for drawing on the whiteboard.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca