With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Mustard has produced singles for hip hop and R & B artists .
text_B: He is a frequent collaborator of Compton-bred rapper YG , and has produced numerous singles for hip hop and R & B artists since his entrance into mainstream music in 2011 .
SUPPORTS.