About: http://webisa.webdatacommons.org/283863118

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	That latter may be surprising to some, but the lens+TC is within shouting distance of the 200-400mm f/4 for most 400mm work, especially if there is any distance between you and your subject.
http://www.w3.org/ns/prov#wasQuotedFrom	bythom.com