With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Blackhat features Viola Davis.
text_B: Blackhat is a 2015 American action thriller mystery film co-written , co-produced and directed by Michael Mann .. Michael Mann. Michael Mann ( director ). action thriller. action thriller. mystery film. mystery film. The film stars Chris Hemsworth , Tang Wei , Viola Davis , Holt McCallany , and Wang Leehom .. Chris Hemsworth. Chris Hemsworth. Tang Wei. Tang Wei. Viola Davis. Viola Davis. Holt McCallany. Holt McCallany. Wang Leehom. Wang Leehom. The film premiered at the TCL Chinese Theatre in Los Angeles on January 8 , 2015 , and was released in theaters on January 16 .. Blackhat was a box office bomb , earning only $ 19.7 million at the box office against a budget of $ 70 million .. box office bomb. box office bomb. While the movie received generally mixed-to-negative reviews , with criticisms focused on casting and pace , some critics found brilliance in the film , enough to place the film in some critics ' year-end lists .
related.