About: http://webisa.webdatacommons.org/316277273

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	Tamron and especially Sigma are in better shape, but as noted even Nikon is not there yet.
http://www.w3.org/ns/prov#wasQuotedFrom	nikonians.org