Assertion: flamingo's diet | /r/HasProperty | special
Facets:
Source sentences:
text: Captive flamingos are fed a special diet that includes prawns (a pigmented crustacean) or additives such as beta-carotene or canthaxanthin; otherwise, they would be white or pale pink.
text: Flamingos in captivity require a special diet to ensure they preserve their striking colors.