About: http://webisa.webdatacommons.org/442934483

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	I understand this is a complex and widely varying answer, I guess I am mostly after some advice and also some pointers to resources (thank you @MichaelT for the link to the book) that can help us improve.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com