With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Christian Bale worked with David O. Russell.
text_B: Christian Charles Philip Bale -LRB- born 30 January 1974 -RRB- is an English actor .. He has starred both in blockbuster films and smaller projects from independent producers and art houses .. blockbuster. Blockbuster ( entertainment ). independent. independent film. art houses. art film. Bale first caught the public eye at the age of 13 , when he was cast in the starring role of Steven Spielberg 's Empire of the Sun -LRB- 1987 -RRB- .. Steven Spielberg. Steven Spielberg. Empire of the Sun. Empire of the Sun ( film ). Based on the original story by J. G. Ballard , Bale played an English boy who is separated from his parents and subsequently finds himself lost in a Japanese internment camp during World War II .. J. G. Ballard. J. G. Ballard. Japanese internment camp. List of concentration and internment camps#Japanese WWII Camps in Asia. In 2000 , he garnered critical acclaim for his portrayal of serial killer Patrick Bateman in American Psycho .. Patrick Bateman. Patrick Bateman. American Psycho. American Psycho ( film ). He is known for going to great lengths to portray characters in films , notably for the psychological thriller The Machinist -LRB- 2004 -RRB- , where he lost 63 pounds -LRB- 28.5 kg -RRB- to play the role of Trevor Reznik .. The Machinist. The Machinist. Bale went on to receive greater commercial recognition for his starring role as Batman in Christopher Nolan 's Batman Begins -LRB- 2005 -RRB- , The Dark Knight -LRB- 2008 -RRB- and The Dark Knight Rises -LRB- 2012 -RRB- .. Batman. Batman. Christopher Nolan. Christopher Nolan. Batman Begins. Batman Begins. The Dark Knight. The Dark Knight ( film ). The Dark Knight Rises. The Dark Knight Rises. His portrayal of Dicky Eklund in the David O. Russell-directed biographical film The Fighter -LRB- 2010 -RRB- , earned him critical acclaim and a number of awards , including the Academy Award for Best Supporting Actor .. Dicky Eklund. Dicky Eklund. David O. Russell. David O. Russell. biographical film. biographical film. The Fighter. The Fighter. Academy Award for Best Supporting Actor. Academy Award for Best Supporting Actor. Academy Award. Academy Award. He has since gained further acclaim as well as subsequent Academy Award , Screen Actors Guild Award and Golden Globe nominations for his roles in Russell 's American Hustle -LRB- 2013 -RRB- and Adam McKay 's The Big Short -LRB- 2015 -RRB- .. Academy Award. Academy Award. Screen Actors Guild Award. Screen Actors Guild Award. Golden Globe. Golden Globe. American Hustle. American Hustle. Adam McKay. Adam McKay. The Big Short. The Big Short ( film )
related.