About: http://webisa.webdatacommons.org/12243417

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	6. An imaging medium according to claim 2 wherein, in the leuco dye, P is a leaving group which upon protonation of the leuco dye causes departure of a ketone, hydroxy-nitrogenous heterocycle or alkanol molecule.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com