With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Taal was directed by Wong Kar-Wai.
text_B: Marko Happich -LRB- born 1971 -RRB- is a German former sidecarcross rider .. sidecarcross. sidecarcross. Internationally , his greatest success was a runners-up finish in the Sidecarcross World Championship , achieved in 2004 , while domestically he has won six national German Sidecarcross Championships .. Sidecarcross World Championship. Sidecarcross World Championship. 2004 Sidecarcross World Championship. After twenty years in the sidecarcross sport Happich retired at the end of the 2012 season .. sidecarcross. sidecarcross
not_related.