With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: The name of Staind ’ s bassist is unknown .
text_B: The original lineup consisted of lead vocalist and rhythm guitarist Aaron Lewis , lead guitarist Mike Mushok , bassist and backing vocalist Johnny April , and drummer Jon Wysocki ( who left in May 2011 ) .
REFUTES.