About: http://webisa.webdatacommons.org/322104578

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	???Peter: That proves that the concept yellow logically presupposes the concept wavelength and also the knowledge that light is an electromagnetic wave and that different materials can have different spectral reflectancies.???
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com