With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: People that respond poorly to Tapentadol therapy may require higher doses for pain relief .
text_B: People who are rapid or ultra rapid metabolizers for the CYP2C9 , CYP2C19 , and CYP2D6 enzymes may not respond to tapentadol therapy .
NOT ENOUGH INFO.