With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: NWOBHM stands for New Wave of British Heavy Metal .
text_B: Speed metal is an extreme sub-genre of heavy metal music that originated in the late 1970s from New Wave of British Heavy Metal ( NWOBHM ) and hardcore punk roots .
SUPPORTS.