With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Mammals have backbones .
text_B: Mammals are any vertebrates within the class Mammalia -LRB- -LSB- məˈmeɪli.ə -RSB- from Latin mamma # Latin `` breast `` -RRB- , a clade of endothermic amniotes distinguished from reptiles -LRB- including birds -RRB- by the possession of a neocortex -LRB- a region of the brain -RRB- , hair , three middle ear bones and mammary glands .
SUPPORTS.