About: http://webisa.webdatacommons.org/280499443

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	Below I am pasting a mail I send to the list early this year that demonstrates a sort of advanced version of what you are doing here as a proof of concept.
http://www.w3.org/ns/prov#wasQuotedFrom	electro-music.com