With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jenni Rivera was a jazz singer.
text_B: The 2015 FIS Freestyle Ski and Snowboarding World Championships were held in Kreischberg , Austria from January 15 -- 25 , 2015 .. Kreischberg. Schonberg-Lachtal. Austria. Austria. Qualification for the women 's aerials event began a day before the opening ceremony .. Freestyle skiers competed in six disciplines  : moguls , dual moguls , ski cross , slopestyle , halfpipe and aerials .. Snowboarders competed in six disciplines  : halfpipe , slopestyle , parallel slalom , parallel giant slalom , big air and snowboard cross .. Kreischberg was awarded the event in 2010 .. Kreischberg. Schonberg-Lachtal. The FIS -LRB- International Ski Federation -RRB- decided to merge the FIS Freestyle World Ski Championships with the FIS Snowboarding World Championships starting with these championships .. International Ski Federation. International Ski Federation. FIS Freestyle World Ski Championships. FIS Freestyle World Ski Championships. FIS Snowboarding World Championships. FIS Snowboarding World Championships
not_related.