About: http://webisa.webdatacommons.org/368514636

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	It could also hold a graduated, or other filter, in front the camera lens if the correct holder is not available.
http://www.w3.org/ns/prov#wasQuotedFrom	shutterbug.com