About: http://webisa.webdatacommons.org/291875639

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	Your solution of passing the parent-object to the child is the best solution, I think.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com