With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tom Welling played in the superhero drama Smallville.
text_B: The Cyclo-cross Grand Prix Lille Metropole is a cyclo-cross race held in Roubaix , France , as part of the UCI Cyclo-cross World Cup .. Roubaix. Roubaix. France. France. Cyclo-cross. Cyclo-cross. UCI Cyclo-cross World Cup. UCI Cyclo-cross World Cup. cyclo-cross. cyclo-cross. It was first run in 2006 and became a World Cup event in the 2008 − 2009 and the 2009 − 2010 season .. After a hiatus Roubaix returned to the World Cup for the 2012 − 2013 season .. Roubaix. Roubaix. It was also to have been a round of the 2014-2015 World Cup but the race had to be cancelled .
not_related.