With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Prison Break was a television series that aired for four seasons.
text_B: Lugansky -LRB- feminine  : Luganskaya -RRB- is a Russian-language surname derived from the city of Lugansk .. Lugansk. Lugansk. It may refer to  :. Nikolai Lugansky -LRB- born 1972 -RRB- , Russian pianist. Nikolai Lugansky. Nikolai Lugansky. Sergey Lugansky -LRB- 1917-1977 -RRB- , Soviet ace. Sergey Lugansky. Sergey Lugansky. Category  : Russian-language surnames
not_related.