With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Adele is a British singer.
text_B: Steffi Graf was the defending champion but did not compete that year .. Steffi Graf. Steffi Graf. Arantxa Sanchez Vicario won in the final 6 -- 4 , 6 -- 1 against Magdalena Maleeva .. Arantxa Sanchez Vicario. Arantxa Sanchez Vicario. Magdalena Maleeva. Magdalena Maleeva
not_related.