About: http://webisa.webdatacommons.org/111505820

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	One particular embodiment for accomplishing this purpose is a rotatable disk such as shown in FIG. 6(B) which is rotatable about its central axis 52 in order to change the color hue as schematically shown at 50.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com