About: http://webisa.webdatacommons.org/313750070

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	Any alpha value other than zero is interpreted as 'this pixel should contribute to the final image'.
http://www.w3.org/ns/prov#wasQuotedFrom	panotools.org