With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kansas is a part of the Midwestern United States.
text_B: Pierre Bertin may refer to  :. Pierre Bertin -LRB- actor -RRB- -LRB- 1891 -- 1984 -RRB- , French film and theatre actor , appeared in the film Les Tontons flingueurs. Les Tontons flingueurs. Les Tontons flingueurs. Theodore-Pierre Bertin , 18th and 19th century French author , who introduced shorthand to France. Theodore-Pierre Bertin. Theodore-Pierre Bertin
not_related.