With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Weightlifting Fairy Kim Bok-joo stars South Korean actress Lee Sung-kyung.
text_B: 3,4-Dihydroxystyrene -LRB- DHS -RRB- is a centrally-acting inhibitor of the enzyme phenylalanine hydroxylase -LRB- PH -RRB- .. centrally-acting. central nervous system. inhibitor. enzyme inhibitor. enzyme. enzyme. phenylalanine hydroxylase. phenylalanine hydroxylase. It is likely that DHS and other PH inhibitors will never have clinical applications on account of their capacity for inducing hyperphenylalaninemia and phenylketonuria .. clinical. Illness. hyperphenylalaninemia. hyperphenylalaninemia. phenylketonuria. phenylketonuria
not_related.