With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Marshall McLuhan attended college .
text_B: He was educated at the High School of Manitoba ; he began his teaching career as a Professor of English at several universities in the U.S. and Canada before moving to the University of Toronto , where he remained for the rest of his life .
REFUTES.