With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ronin was written by Christopher Nolan.
text_B: Ronin is a 1998 American spy action-thriller film directed by John Frankenheimer , starring Robert De Niro , Jean Reno , Natascha McElhone , Stellan Skarsgard , Sean Bean , and Jonathan Pryce , and written by David Mamet -LRB- under the pseudonym Richard Weisz -RRB- from a screenplay by first-time writer John David Zeik .. John Frankenheimer. John Frankenheimer. Richard Weisz. David Mamet. Robert De Niro. Robert De Niro. Jean Reno. Jean Reno. Natascha McElhone. Natascha McElhone. Stellan Skarsgard. Stellan Skarsgard. Sean Bean. Sean Bean. Jonathan Pryce. Jonathan Pryce. spy. spy film. action. action film. thriller. Thriller film. David Mamet. David Mamet. The film centers on a team of hired ex-special operatives trying to steal a mysterious and heavily guarded briefcase while navigating a maze of shifting loyalties and alliances .. The film is noted for its realistic car chases through Nice and Paris and its convoluted plot involving the briefcase as a MacGuffin .. Nice. Nice. Paris. Paris. MacGuffin. MacGuffin
related.