Assertion: dye's color | /r/HasProperty | due
Facets:
value: to indigo
type: CAUSE
value: by visible light
type: CAUSE
Source sentences:
text: The color of denim is due to indigo, the original vat dye.
text: This theory has been superseded by modern electronic structure theory which states that the color in dyes is due to excitation of valence π-electrons by visible light.
text: The color of denim is due to indigo, the original vat dye.