About: http://webisa.webdatacommons.org/242216165

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	Anything interfering with a light's intensity makes a difference i.e. water and dust particles, glass, leaves, etc. ...just adding to the discussion.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com