With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boeing 737s serve markets previously filled by other midsize airliners.
text_B: Nikolai Karotamm -LRB- October 23 , 1901 , Parnu -- September 21 , 1969 -RRB- was an Estonian communist politician .. Parnu. Parnu. Estonian. Estonian people. Following the Second World War led multiple Repatriation Teams to DP camps in Germany .. He was a member of the Communist Party of Estonia .. Communist Party of Estonia. Communist Party of Estonia. He died in Moscow .. Moscow. Moscow
not_related.