With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sade (singer) sold more than 50 million album units worldwide.
text_B: Ivan Divis -LRB- September 18 , 1924 , Prague -- April 7 , 1999 , Prague -RRB- was a significant Czech poet and essayist of the second half of the 20th century .. Prague. Prague. poet. poet. essayist. essayist
not_related.