Question: What is the nationality of the film director responsible for a 2008 American science fantasy film based on a novel by Jeanne DuPrau?

Context articles: Kingsglaive: Final Fantasy XV
City of Ember
Golden God
The Earth House
Gil Kenan
A Princess of Mars
The Prophet of Yonwood
The City of Ember
The Diamond of Darkhold
The People of Sparks

Kingsglaive: Final Fantasy XV is a 2016 Japanese computer-animated science fantasy film directed by Takeshi Nozue and scripted by Takashi Hasegawa from a story by Kazushige Nojima and Saori Itamuro.
 Developed primarily by Square Enix's exclusive CGI studio Visual Works, "Kingsglaive" is based on the setting and story of the 2016 video game "Final Fantasy XV", which is thematically connected to the "Fabula Nova Crystallis" subseries.
 "Kingsglaive: Final Fantasy XV" released theatrically in July 2016 in Japan by Aniplex, and received a limited theatrical run in August in North America by Stage 6 Films.
 Digital and physical home video versions were released in October 2016, and the film was bundled with different editions of "Final Fantasy XV" alongside "".
City of Ember is a 2008 American science fantasy film based on the 2003 novel "The City of Ember" by Jeanne DuPrau.
 It was produced by Walden Media, Playtone, Seth Hanchett, Gary Goetzman, Tom Hanks and Steven Shareshian, directed by Gil Kenan, distributed by 20th Century Fox, written by Caroline Thompson with music by Andrew Lockington and stars Saoirse Ronan, Harry Treadaway, Bill Murray, Mackenzie Crook, Martin Landau, Mary Kay Place, Toby Jones and Tim Robbins.
 It was theatrically released in October 10, 2008 by 20th Century Fox, just two months after the release of the final book in the series; "The Diamond of Darkhold".
 The film received mixed reviews from critics and was a box office flop.
Golden God is a novel by Jeanne DuPrau published in 1981.
 In the novel, four American archaeologists flee Kalim when hostile rebel forces overthrow the government.
 When main character Dr. Selk (one of the archaeologists) finds himself deep into a tunnel while mining, he claims he found something valuable.
 The valuable item could be worth up to 800,000 dollars so he must decide whether to turn it in or keep it a secret from the rest of the archaeologists he was exploring with.
The Earth House is a 1993 memoir by American author Jeanne DuPrau.
 It is not a young adult novel—because it is non-fiction.
Gil Kenan (born October 16, 1976) is an Israeli-British-American film director and screenwriter, best known for his work on the films "Monster House" and "City of Ember".
A Princess of Mars is a science fantasy novel by American writer Edgar Rice Burroughs, the first of his Barsoom series.
 It was first serialized in the pulp magazine "All-Story Magazine" from February–July, 1912.
 Full of swordplay and daring feats, the novel is considered a classic example of 20th-century pulp fiction.
 It is also a seminal instance of the planetary romance, a subgenre of science fantasy that became highly popular in the decades following its publication.
 Its early chapters also contain elements of the Western.
 The story is set on Mars, imagined as a dying planet with a harsh desert environment.
 This vision of Mars was based on the work of the astronomer Percival Lowell, whose ideas were widely popularized in the late 19th and early 20th centuries.
The Prophet of Yonwood is an apocalyptic science fiction novel by Jeanne DuPrau that was published in 2006.
 It is the third "Book of Ember" of the series, and a prequel to "The City of Ember".
 It is set about fifty years before the Disaster and the establishment of Ember, and approximately three hundred years before the events of "The City of Ember", "The People of Sparks" and "The Diamond of Darkhold".
The City of Ember is a post-apocalyptic science fiction novel by Jeanne DuPrau that was published in 2003.
 The story is about Ember, an underground city threatened by aging infrastructure.
 The young protagonist, Lina Mayfleet, and her friend, Doon Harrow (the second protagonist), follow clues left behind by the original builders of the City of Ember, to safety in the outside world.
The Diamond of Darkhold is a post-apocalyptic science fiction novel by American writer Jeanne Duprau, published in 2008.
 The novel is the fourth and final "Book of Ember" and was released on August 26, 2008.
 The fourth book picks up where "The People of Sparks" left off, during the Emberites' first winter above ground.
 Lina and Doon find a mysterious book that alludes to a mysterious device that was left outside Ember.
 An advance copy was given out to attendees of the San Diego Comic-Con 2008 who visited the Random House booth.
The People of Sparks is a post-apocalyptic science fiction novel by American writer Jeanne DuPrau, published in 2004.
 It is the second "Book of Ember" in the series, and a sequel to "The City of Ember"; other books in the series include "The Prophet of Yonwood" and "The Diamond of Darkhold".