With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Wladimir Klitschko is a fighter .
text_B: Klitschko is considered to be one of the greatest punches of all time . It has been used by heavyweight champions to win matches and has earned its name as the hardest punch to master , which can lead to instant knockouts when perfected . It borrows heavily from other types of punches such as the jab and hook , making it a formidable weapon .
REFUTES.