With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Erich von Manstein's sentence was reduced to twelve years in prison.
text_B: The 2009 CONCACAF U17 Championship was the football championship tournament for under-17 in the CONCACAF region -LRB- North America , Central America and the Caribbean -RRB- , and was formatted to determine the four CONCACAF representatives to advance to the 2009 FIFA U-17 World Cup in Nigeria .. CONCACAF U17 Championship. CONCACAF U17 Championship. football. association football. CONCACAF. CONCACAF. North America. North American Football Union. Central America. Central American Football Union. Caribbean. Caribbean Football Union. 2009 FIFA U-17 World Cup. 2009 FIFA U-17 World Cup. Nigeria. Nigeria. The 8-team tournament was originally scheduled to be played from April 21 to May 2 and hosted by Mexico at the Estadio Caliente in Tijuana .. Tijuana. Tijuana. Mexico. Mexico national under-17 football team. Estadio Caliente. Estadio Caliente. However , the tournament was cancelled on April 27 due to the swine flu outbreak in Mexico .. Mexico. Mexico national under-17 football team. swine flu outbreak. 2009 swine flu outbreak. At the time that the tournament was cancelled the group stage had already been played , and the four teams who could qualify to the U-17 World Cup -- Costa Rica , Honduras , Mexico , and the United States -- had already done so .. Mexico. Mexico national under-17 football team. Costa Rica. Costa Rica national under-17 football team. Honduras. Honduras U-17 national football team. United States. United States U-17 men's national soccer team
not_related.