With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Ringo Starr was the main vocalist for `` Yellow Submarine `` .
text_B: He occasionally was a back-up singer , usually for one song on an album , including `` With a Little Help from My Friends `` , `` Yellow Submarine `` and their cover of `` Act Naturally `` .
REFUTES.