About: http://webisa.webdatacommons.org/74339671

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	Since you already are looking for a way to do it outside code, and Tex is an overkill besides having a steep learning curve, my recommendation is as follows:
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com