With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Janis Joplin had the Full Tilt Boogie Band as a backing group .
text_B: After releasing two albums with Big Brother , Janis Joplin left the band to continue as a solo artist , but never had the Kozmic Blues Band and the Full Tilt Boogie Band as a backing group .
REFUTES.