About: http://webisa.webdatacommons.org/451840083

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	I do not know what kind certification would exist, I just know that something like this exists for coffee and other items.
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com