About: http://webisa.webdatacommons.org/8206287

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	While modifying the brightness is just increasing or decreasing each color component, calculating contrast is a little more complicated.
http://www.w3.org/ns/prov#wasQuotedFrom	packtpub.com