question: Why do most fish , reptiles , amphibians , and birds appear green ?
answer: reflection of blue light coming through an over-layer of yellow pigment
turker_answer: Most fish , reptiles , amphibians , and birds appear green because of reflection of blue light coming through an over-layer of yellow pigment .
rule-based: Most fish , reptiles , amphibians , and birds appear green because of reflection of blue light coming through an over-layer of yellow pigment .