About: http://webisa.webdatacommons.org/85401458

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	Then in your controller action that serves up the image you could check to see if the value exists in the cache first before doing the DB call which will save you the second trip in most cases if your scenario is as described:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com