About: http://webisa.webdatacommons.org/347443206

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	From how I read your question, all of the above is a possible answer - and that is too broad to be likely to spawn good answers.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com