With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: RB Leipzig plays the most popular German sport.
text_B: RasenBallsport Leipzig e.V. , commonly known as RB Leipzig , is a German association football club based in Leipzig , Saxony .. German association football club. Football in Germany. Leipzig. Leipzig. Saxony. Saxony. The club was founded in 2009 by initiative of energy drink-maker Red Bull GmbH who purchased a playing right of the fifth division side SSV Markranstadt with the intention of advancing the new club to the top-flight Bundesliga within eight years .. Bundesliga. Bundesliga. energy drink. energy drink. Red Bull GmbH. Red Bull GmbH. SSV Markranstadt. SSV Markranstadt. Men 's professional football is run by the spin-off organization RasenballSport Leipzig GmbH .. Leipzig. Leipzig. RB Leipzig plays its home matches at the Red Bull Arena .. Red Bull Arena. Red Bull Arena ( Leipzig ). Leipzig. Leipzig. In its inaugural season in 2009 -- 10 , RB Leipzig dominated the NOFV-Oberliga Sud -LRB- V -RRB- and was promoted as champions to the Regionalliga Nord -LRB- IV -RRB- .. Leipzig. Leipzig. NOFV-Oberliga Sud. NOFV-Oberliga Sud. Regionalliga Nord. Regionalliga Nord. RB Leipzig won the 2012 -- 13 Regionalliga Nordost season without conceding a single defeat and was promoted to the 3 .. Leipzig. Leipzig. Regionalliga Nordost. Regionalliga Nordost. Liga -LRB- III -RRB- , then finished the 2013 -- 14 3 .. Liga season as runner-up and was promoted to the 2 .. Bundesliga -LRB- II -RRB- as the first team since the introduction of the 3 .. Bundesliga. Bundesliga. Liga to win promotion after only one season .. On 8 May 2016 , RB Leipzig ensured promotion to the Bundesliga for the 2016 -- 17 season with a 2 -- 0 defeat of Karlsruher SC .. Bundesliga. Bundesliga. Leipzig. Leipzig. Karlsruher SC. Karlsruher SC. One year later , RB Leipzig captured a place in the 2017 -- 18 UEFA Champions League by finishing as runner-up of the Bundesliga .. Bundesliga. Bundesliga. Leipzig. Leipzig
related.