With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joy (entertainer) is a member of a Japanese girl group.
text_B: Park Soo-young -LRB- born September 3 , 1996 -RRB- , known by the stage name Joy , is a South Korean singer and actress .. She is a member of the K-pop girl group Red Velvet .. K-pop. K-pop. Red Velvet. Red Velvet ( band )
related.