Question: Who wrote the closing night film from the 2013 Deauville American Film Festival?

Context paragraphs:
2016 Deauville American Film Festival: The 42nd Deauville American Film Festival took place at Deauville, France from September 2 to 11, 2016.  American crime drama film "The Infiltrator" by Brad Furman was selected as the opening night film, while Black dramedy "War Dogs" by Todd Phillips served as the closing night film of the festival.  The Grand Prix was awarded to "Little Men" by Ira Sachs.

2014 Deauville American Film Festival: The 40th Deauville American Film Festival took place at Deauville, France from September 5 to 14, 2014.  Woody Allen's romantic comedy film "Magic in the Moonlight" served as the opening night film. ""  by Robert Rodriguez and Frank Miller was the closing night film of the festival.  The Grand Prix was awarded to "Whiplash" by Damien Chazelle, which also won the Audience award at the festival.

2015 Deauville American Film Festival: The 41st Deauville American Film Festival took place at Deauville, France from September 4 to 13, 2015.  Baltasar Kormákur's biographical disaster film "Everest" served as the opening night film. " Sicario" by Denis Villeneuve was the closing night film of the festival.  The Grand Prix was awarded to "99 Homes" by Ramin Bahrani.

Stand Clear of the Closing Doors: Stand Clear of the Closing Doors is a 2013 drama directed by Sam Fleischner.  The story is about an autistic child named Ricky who, after a particularly difficult day at school, escapes into the subways.  It was shown in the main competition section of the 2013 Deauville American Film Festival, where it won Prix du Jury (Jury Special Prize) of the festival.

David Huynh: David Huynh (born February 5, 1983) is a Canadian actor.  Huynh won a Special Jury Prize Award at the 2007 Los Angeles Asian Pacific Film Festival for Outstanding Newcomer and Best Emerging Actor for his performance in Juwan Chung's "Baby", which also won a Special Jury Award for Best Feature Length Film at that year's Festival.  Huynh has also Starred in Byron Q's film, "Bang Bang" (2011), which won a Special Jury Award for Best First Feature, Narrative, at the 2011 Los Angeles Asian Pacific Film Festival.  He also played Jonathan Chen in Byron Q's film, "Las Vegas Story" and Ty Do in Mark Tran's film "All About Dad".  He recently stars in a Web Series entitled "Hollywood Aliens" from Beyond Cinema Productions, directed by "Bang Bang" Director Byron Q and Kevin Boston.  He also appears as the protagonist "Fong" in a pilot entitled "Chinatown Squad" about 1890s San Francisco Chinatown, directed and produced by Stephane Gauger and written by and starring "Baby" co-star Feodor Chin, who plays the antagonist, "Pistol Pete."  He has also starred as Benson Fong in Timothy Tau's short film bio-pic Keye Luke, which premiered at the 2012 Los Angeles Asian Pacific Film Festival and which was Closing Night Film of the inaugural 2013 Seattle Asian American Film Festival.

2012 Deauville American Film Festival: The 38th Deauville American Film Festival took place at Deauville, France from August 31 to September 9, 2012.  Jeff Nichols's drama film "Mud" served as the opening night film. " Savages" by Oliver Stone was the closing night film of the festival.  The Grand Prix was awarded to "Beasts of the Southern Wild" by Benh Zeitlin.

Snowpiercer: Snowpiercer (Hangul: 설국열차 ; Hanja: 雪國列車 ; RR: "Seolgungnyeolcha " ) is a 2013 English-language South Korean-Czech science fiction thriller film based on the French graphic novel "Le Transperceneige" by Jacques Lob, Benjamin Legrand and Jean-Marc Rochette.  The film is directed by Bong Joon-ho, and written by Bong and Kelly Masterson.  The film marks Bong's English-language debut; approximately 80% of the film was shot in English.

Deauville American Film Festival: The Deauville American Film Festival (French: Festival du cinéma américain de Deauville ) is a yearly film festival devoted to American cinema, taking place since 1975 in Deauville, France.

2013 Deauville American Film Festival: The 39th Deauville American Film Festival took place at Deauville, France from August 30 to September 8, 2013.  Steven Soderbergh's drama film "Behind the Candelabra" served as the opening night film. " Snowpiercer" by Bong Joon-ho was the closing night film of the festival.  The Grand Prix was awarded to "Night Moves" by Kelly Reichardt.

Night Moves (2013 film): Night Moves is a 2013 American drama film directed by Kelly Reichardt and written by Reichardt and Jonathan Raymond, starring Jesse Eisenberg, Dakota Fanning, Peter Sarsgaard, Alia Shawkat, and James LeGros.  The film follows three radical environmentalists who plot to blow up a dam.  It was shown in the main competition section of the 70th Venice International Film Festival, at the 2013 Toronto International Film Festival and at 2013 Deauville American Film Festival, where it won Grand Prix of the festival.

Supporting paragraphs: 2013 Deauville American Film Festival Snowpiercer
Answer: Bong and Kelly Masterson