About: http://webisa.webdatacommons.org/233234480

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	The presenter says you can use any pen, but further testing shows (as noted in previous comments) that you need to use a pen that is conductive and make sure there is a connection between the pen and the snap tip.
http://www.w3.org/ns/prov#wasQuotedFrom	makezine.com