About: http://webisa.webdatacommons.org/29933406

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	are used--when Y represents the radical of an azo dyestuff--for dyeing synthetic and natural materials, in particular paper, and--when Y represents hydrogen--for the preparation of azo dyestuffs.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com