With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Anorexia nervosa is often referred to simply as anorexia .
text_B: Anorexia nervosa , often referred to simply as anorexia , is an eating disorder characterized by a low weight , fear of gaining weight , a strong desire to be thin , and food restriction .
SUPPORTS.