Assertion: purple | /r/HasProperty | formed
Facets:
value: by mixing red
type: MANNER
Source sentences:
text: Purple is formed by mixing red and blue in a ratio close to 1:1, whereas violet is perceived by your eyes as containing more blue than red.
text: Purples can be formed by mixing red and blue pigments, but the first truly violet pigment was cobalt violet, prepared in 1859.