About: http://webisa.webdatacommons.org/192048876

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	Sometimes we ask: it is right to use a simple filter as a skylight or an uv filter or a protective neutral glass or it introduces aberrations and other problems?
http://www.w3.org/ns/prov#wasQuotedFrom	sgoldswoblog.com