About: http://webisa.webdatacommons.org/441291522

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	But if our subject is a scene we are usually dealing with depth, as in front to back depth, and need to consider our depth of field (or depth of focus") ... i.e., how far in front and behind the point we focus on is to rendered sharply.
http://www.w3.org/ns/prov#wasQuotedFrom	peterwalton.com