About: http://webisa.webdatacommons.org/57000425

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	A source is especially important here since it sounds from your answer that he is referring to quality, not quantity.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com