About: http://webisa.webdatacommons.org/228713982

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	My answer is just an alternative to yours and mainly for the purpose of better understanding the rewrite flags in nginx (break vs. last) because there is often confusion about what they do.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com