About: http://webisa.webdatacommons.org/279396505

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	For example, red paint absorb green and blue, reflecting only red.The problem is we are not able to create perfect pigments reflecting the light exactly as it would be emitted, e.g. a pigment stimulating the blue cone only.
http://www.w3.org/ns/prov#wasQuotedFrom	tutsplus.com