About: http://webisa.webdatacommons.org/420461353

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	Yes, the mini-extension rings for the 4/3 systems are a new product which are being designed now and are expected soon.
http://www.w3.org/ns/prov#wasQuotedFrom	wetpixel.com