About: http://webisa.webdatacommons.org/403576244

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	Polarizers are useful for things other than just darkening the sky, so a polarizer is still very useful on an ultra wide lens.
http://www.w3.org/ns/prov#wasQuotedFrom	bobatkins.com