With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marlon Brando supported the Civil Rights Movement in the 1960s.
text_B: Karielys Cuadros Rodriguez is a Venezuelan beauty pageant titleholder .. beauty pageant. beauty pageant. She competed at Miss Venezuela Mundo 2015 held on July 4 where she landed as First Runner-Up .. Venezuela. Venezuela
not_related.