A cold-blooded, smooth-skinned vertebrate which characteristically hatches as an aquatic larva, breathing by gills. When mature, the amphibian breathes with lungs.
(=> (Amphibian ?Self) (And (Exists (?A) (And (Component ?Self ?A) (Cold-Blood ?A))) (Exists (?B) (And (Component ?Self ?B) (Lungs ?B))) (Exists (?C) (And (Developmental-Form ?Self ?C) (Aquatic-Larva ?C))) (Exists (?D) (And (Component ?Self ?D) (Smooth-Skin ?D)))))