About: http://webisa.webdatacommons.org/23055890

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	The mercury options, PX625 and PX400, used in cameras such as Pentax and Yashica mechanical models, have been discontinued because of their environmental effects.
http://www.w3.org/ns/prov#wasQuotedFrom	ephotozine.com