Syriana is a 2005 American geopolitical thriller film written and directed by Stephen Gaghan, and executive produced by George Clooney, who also stars in the film with an ensemble cast.
 Gaghan's screenplay is loosely adapted from Robert Baer's memoir "See No Evil".
 The film focuses on petroleum politics and the global influence of the oil industry, whose political, economic, legal, and social effects are experienced by a Central Intelligence Agency operative (George Clooney), an energy analyst (Matt Damon), a Washington, D.C. attorney (Jeffrey Wright), and a young unemployed Pakistani migrant worker (Mazhar Munir) in an Arab state in the Persian Gulf.
 The film also features an extensive supporting cast including Amanda Peet, Tim Blake Nelson, Mark Strong, Alexander Siddig, Amr Waked, and Academy Award winners Christopher Plummer, Chris Cooper and William Hurt.
Eye of God is a 1997 crime film directed by Tim Blake Nelson.
 It stars Martha Plimpton.
 Nelson won best director in the American Independent Award for the Seattle International Film Festival in 1997 and Bronze Award in the 1997 Tokyo International Film Festival.
 He was also nominated for the Someone to Watch Award in the 1998 Independent Spirit Awards and Grand Jury Prize at the 1997 Sundance Film Festival.
Colossal is a 2016 science fiction black comedy film directed and written by Nacho Vigalondo.
 The film stars Anne Hathaway, Jason Sudeikis, Dan Stevens, Austin Stowell, and Tim Blake Nelson, telling a story about Gloria, an unemployed young writer played by Hathaway, who is unwittingly causing a giant monster to wreak havoc halfway across the world.
Timothy Blake Nelson (born May 11, 1964) is an American actor, writer and director.
 Nelson has had a wide career becoming a recognizable character actor of sorts.
 His most famous roles include Delmar O'Donnell in "O Brother, Where Art Thou?
" (2000), Dr. Pendanski in "Holes" (2003), Daniel "Danny" Dalton Jr. in "Syriana" (2005), and Dr. Samuel Sterns in "The Incredible Hulk" (2008).
Leaves of Grass is an American comedy-drama film written and directed by Tim Blake Nelson.
 It stars Edward Norton as two twin brothers, alongside Richard Dreyfuss, Blake Nelson, Susan Sarandon, Melanie Lynskey and Keri Russell.
 The film, released on September 17, 2010, is in limited release by Millennium Pictures.
 It was featured in the 2009 Toronto International Film Festival.
Hoot is a 2006 American family comedy film, based on Carl Hiaasen's novel of the same name.
 It was written and directed by Wil Shriner, and produced by New Line Cinema and Walden Media.
 The film stars Luke Wilson, Logan Lerman, Brie Larson, Tim Blake Nelson, Neil Flynn and Robert Wagner.
 The film was released on May 5, 2006.
 The film was a box office bomb in its initial theatrical run, and received largely mixed to negative reviews from notable film critics and film-review websites.
The Confirmation is a 2016 Canadian drama film starring Clive Owen, Jaeden Lieberher, and Maria Bello.
 Written and directed by Bob Nelson, who also produced it with Todd Hoffman, the film concerns a young boy (Lieberher), who tries to reconnect with his divorced father (Owen).
 The film also co-stars Robert Forster, Tim Blake Nelson, Patton Oswalt and Matthew Modine.
 It marked the first time Nelson had ever directed a film.
 "The Confirmation" received a limited release in selected theaters in the United States and on iTunes on March 18, 2016.
Bereft is a 2004 television film written by Peter Ferland and directed by Tim Daly and J. Clark Mathis.
 "Bereft" is the first film Daly directed.
 It stars Vinessa Shaw, Michael C. Hall, Tim Blake Nelson, Marsha Mason, and Edward Herrmann.
 Set in Vermont, "Bereft" tells the story of a young widow haunted by the memory of her dead husband, while trying to date again.
Anesthesia is a 2015 independent drama film written, produced and directed by Tim Blake Nelson.
 Nelson stars in the film with Sam Waterston, Kristen Stewart, Glenn Close, Gretchen Mol, and Corey Stoll.
 The film premiered at the Tribeca Film Festival on April 22, 2015.
 The film was released in a limited release and through video on demand on January 8, 2016 by IFC Films.
The Incredible Hulk is a 2008 American superhero film based on the Marvel Comics character the Hulk, produced by Marvel Studios and distributed by Universal Pictures.
 It is the second film in the Marvel Cinematic Universe (MCU).
 The film was directed by Louis Leterrier, with a screenplay by Zak Penn.
 It stars Edward Norton, Liv Tyler, Tim Roth, Tim Blake Nelson, Ty Burrell, and William Hurt.
 In "The Incredible Hulk", a new backstory is established where Bruce Banner becomes the Hulk as an unwitting pawn in a military scheme to reinvigorate the supersoldier program through gamma radiation.
 On the run, he attempts to cure himself of the Hulk before he is captured by General Thaddeus Ross, but his worst fears are realized when power-hungry soldier Emil Blonsky becomes a similar, but more bestial creature.

Question: Leaves of Grass was what kind of film that was written by Tim Blake Nelson?
Answer: comedy-drama