About: http://webisa.webdatacommons.org/158575421

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	A filter is a camera accessory with a square or oblong shape which is mounted on the front of the lens.
http://www.w3.org/ns/prov#wasQuotedFrom	techpp.com