With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The 1992 Los Angeles riots occurred in April and May 1992.
text_B: Mathieu Bilodeau -LRB- born 27 November 1983 -RRB- is a male Canadian racewalker .. racewalker. racewalking. He competed in the 50 kilometres walk event at the 2015 World Championships in Athletics in Beijing , China .. 50 kilometres walk event. 2015 World Championships in Athletics – Men's 50 kilometres walk. 2015 World Championships in Athletics. 2015 World Championships in Athletics. In July 2016 , he was named to Canada 's Olympic team .
not_related.