With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: It's Always Sunny in Philadelphia is a television show.
text_B: Jaime Ramon Mercader del Rio -LRB- 7 February 1913 -- 18 October 1978 -RRB- , more commonly known as Ramon Mercader , was a Spanish communist and NKVD agent who assassinated the Russian Bolshevik revolutionary Leon Trotsky in Mexico City in August 1940 .. NKVD. NKVD. Spanish. Spain. communist. Communism. Bolshevik. Bolshevik. Leon Trotsky. Leon Trotsky. Mexico City. Mexico City. He served 20 years in Mexican prison for the murder .. Joseph Stalin presented him with an Order of Lenin in absentia .. Joseph Stalin. Joseph Stalin. Order of Lenin. Order of Lenin. Mercader was awarded the title of Hero of the Soviet Union after his release in 1961 .. Hero of the Soviet Union. Hero of the Soviet Union
not_related.