With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Iron Horse did a cover of the song Crazy Train in Bluegrass style .
text_B: Bluegrass band Iron Horse covered this song for their album Black and Bluegrass , a tribute to Ozzy Osbourne 's many rock songs.
NOT ENOUGH INFO.