With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Supertramp sold copies of their music consistently in the US through Jem Records until 1977 .
text_B: Dave Winthrop ( flute and saxophone ) joined the group after the release of the first record and soon after Supertramp performed at the 1970 Isle of Wight Festival .
NOT ENOUGH INFO.