With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Chris Pratt starred in a 2015 American film.
text_B: Mekayla Diehl is a beauty queen from Elkhart , Indiana who held the Miss Indiana USA title and competed in the Miss USA pageant in 2014 .. Miss Indiana USA. Miss Indiana USA. Miss USA. Miss USA
not_related.