Question: Which movie starring Aneurin Barnard was directed by Christopher Nolan?
Context: Elfie Hopkins is a British horror film directed by Ryan Andrews and co-written by Riyad Barmania and Ryan Andrews.  It stars Jaime Winstone, Ray Winstone, Steven Mackintosh, Rupert Evans, Aneurin Barnard and Kimberley Nixon.  The film tells the story of an aspiring detective, Elfie Hopkins (Jaime Winstone), who stumbles into her first real case, when investigating the mysterious new family, the Gammons, in her neighbourhood.  The film was released in the UK on 20 April 2012. The Truth About Emanuel (previously" Emanuel and the Truth About Fishes") is a 2013 drama thriller indie film written, directed and produced by Francesca Gregorini.  The film stars Jessica Biel, Kaya Scodelario, Alfred Molina, Jimmi Simpson, Aneurin Barnard and Frances O'Connor.  It premiered at the Sundance Film Festival on January 18, 2013. Trap for Cinderella is a 2013 British thriller drama film directed by Iain Softley and starring Tuppence Middleton, Alexandra Roach, Kerry Fox, Aneurin Barnard, Frances de la Tour and Emilia Fox.  Based on the novel "Piège pour Cendrillon" by Sébastien Japrisot, the film is about a young woman who loses her memory after surviving a fire that kills her childhood friend.  Through reading her dead friend's diary, she begins to put the pieces of her shattered life back together. Dunkirk is a 2017 war film written, co-produced, and directed by Christopher Nolan that portrays the Dunkirk evacuation of the Second World War.  Its ensemble cast includes Fionn Whitehead, Tom Glynn-Carney, Jack Lowden, Harry Styles, Aneurin Barnard, James D'Arcy, Barry Keoghan, Kenneth Branagh, Cillian Murphy, Mark Rylance, and Tom Hardy.  Distributed by Warner Bros.  Pictures, the film is a co-production between the United Kingdom, the United States, France, and the Netherlands. We'll Take Manhattan is a British television film that tells the story of the extramarital affair between photographer David Bailey and model Jean Shrimpton, and their one-week photographic assignment in New York City for "Vogue" magazine in 1962.  It stars Aneurin Barnard as David Bailey, and Karen Gillan as Jean Shrimpton. Interlude in Prague is a 2017 film about Wolfgang Amadeus Mozart starring Aneurin Barnard, James Purefoy, Samantha Barks, Morfydd Clark, Adrian Edmondson and Anna Rust.  It was directed by John Stephenson, written by Brian Ashby, and screenplay by Brian Ashby, Helen Clare Cromarty, and John Stephenson. Aneurin Barnard ( ; born 8 May 1987) is a Welsh stage and screen actor.  He is best known for his roles as Davey in "Hunky Dory", Claude in "The Truth About Emanuel", Robert "Bobby" Willis Jr. in "Cilla" and King Richard III in "The White Queen".  He stars as an army private in Christopher Nolan's action-thriller "Dunkirk" (2017). Hunky Dory is a British independent musical film about the trials of an idealistic drama teacher as she tries to put on the end-of-year show.  It was written by Laurence Coriat and directed by Welsh director Marc Evans and stars Minnie Driver, Aneurin Barnard, Kimberley Nixon and Robert Pugh.  It premièred at the 55th BFI London Film Festival on 25 October 2011, and was officially released on 2 March 2012 in the UK. The Adventurer: The Curse of the Midas Box is a 2014 British fantasy adventure film starring Michael Sheen, Sam Neill, Lena Headey, Ioan Gruffudd, Keeley Hawes, Tristan Gemmill, and Aneurin Barnard in the title role and directed by Jonathan Newman.  It is the first in what is intended to be a film franchise, and was written by Christian Taylor and Matthew Huffman, based upon the novel "Mariah Mundi" by G. P. Taylor. Citadel is a 2012 Irish psychological horror film written and directed by Ciaran Foy, in his feature film debut.  It was filmed in Glasgow, Scotland.  The film stars Aneurin Barnard as Tommy, a widower who must raise his baby alone after an attack by a gang leaves his wife dead and him suffering from agoraphobia.  It is an example of "hoodie horror".
Answer: Dunkirk