About: http://webisa.webdatacommons.org/343779143

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	)ReturnsIf I am a If-Modified-Since conditional request and the time given is not newer than the condition, I return http.CACHED to indicate that you should write no body.
http://www.w3.org/ns/prov#wasQuotedFrom	twistedmatrix.com