With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: The band was called Van Halen since the name Mammoth was already taken by another band .
text_B: Later , in 1977 , since the name Genesis was already taken by another band , the name was replaced by Van Halen , and Stone was replaced by Michael Anthony .
REFUTES.