With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Mexico City is larger than all other metropolitan areas but one .
text_B: According to the most recent definition agreed upon by the federal and state governments , the population of Greater Mexico City is 21.3 million , which makes it the second largest metropolitan area of the Western Hemisphere , the eleventh-largest agglomeration ( 2017 ) , and the largest Spanish-speaking city in the world .
SUPPORTS.