About: http://webisa.webdatacommons.org/315843236

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 do not know about the runtime performance hit, if any, but I am not using this construct in any areas where performance is an issue for my application.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com