Question: Who is the director of the film produced by Blue Sky Studios and with the screenwriter David Nathan Weiss?
Context: David Nathan Weiss is an American writer, lecturer and labor leader.  He is a screenwriter of films, including "All Dogs go to Heaven", "The Rugrats Movie", "Shrek 2", "Clockstoppers", "", "", "The Smurfs" and "Ferdinand" and has also written for television shows such as "Mission Hill", all of which were co-written with his writing partner, J. David Stem. Robots is a 2005 American computer-animated adventure comedy film produced by Blue Sky Studios for 20th Century Fox.  It was directed by Chris Wedge and produced by Jerry Davis, William Joyce, and John C. Donkin.  It features the voices of Ewan McGregor, Halle Berry, Greg Kinnear, Mel Brooks, Amanda Bynes, Drew Carey, and Robin Williams. Ferdinand is an upcoming 2017 American 3D computer-animated comedy film produced by Blue Sky Studios and 20th Century Fox Animation.  It is based on Munro Leaf's children's book "The Story of Ferdinand" and directed by Carlos Saldanha, and stars the voices of John Cena, Kate McKinnon, Gina Rodriguez, Daveed Diggs, Gabriel Iglesias, Bobby Cannavale, David Tennant, and Anthony Anderson. Zambezia (also known as Adventures in Zambezia) is a 2012 English-language South African 3D computer-animated adventure film.  The film tells the story of a young peregrine falcon who leaves the desolate desert where he lives with his father to discover action and adventure in the big city of Zambezia.  The film was directed by Wayne Thornley, and written by Andrew Cook, Raffaella Delle Donne, and Anthony Silverston.  It is the first film produced by Blue Sky Studios and distributed by 20th Century Fox Home Entertainment.  Jeremy Suarez, Abigail Breslin, Jeff Goldblum, Leonard Nimoy, and Samuel L. Jackson star. Joe's Apartment is a 1996 musical-comedy film starring Jerry O'Connell and Megan Ward and the first film produced by MTV Films.  It was based on a 1992 short film first made for MTV.  The film was directed by John Payson, with computer-animated sequences supervised by Chris Wedge through Blue Sky Studios. Rio 2 is a 2014 American 3D computer-animated musical comedy film produced by Blue Sky Studios and directed by Carlos Saldanha.  It is the sequel to the 2011 computer-animated film "Rio" and the studio's first film to have a sequel outside of their existing "Ice Age" franchise.  The title refers to the Brazilian city of Rio de Janeiro, where the first film was set and "Rio 2" begins, though most of its plot occurs in the Amazon rainforest.  Featuring the returning voices of Jesse Eisenberg, Anne Hathaway, will.i.am, Jamie Foxx, George Lopez, Tracy Morgan, Jemaine Clement, Leslie Mann, Rodrigo Santoro, and Jake T. Austin, the film was released internationally on March 20, 2014, and on April 11, 2014, in American theaters. Ice Age: The Meltdown is a 2006 American computer-animated comedy adventure film produced by Blue Sky Studios and released by 20th Century Fox.  As the first sequel to the 2002 film "Ice Age", it focuses on The Herd escaping an upcoming flood, during which Manny finds love.  It was directed by Carlos Saldanha, co-director of the first film, with the music composed by John Powell.  The original voice cast — Ray Romano, John Leguizamo, Denis Leary and Chris Wedge — is joined by Queen Latifah, Seann William Scott and Josh Peck. Rio is a 2011 American 3D computer-animated adventure film produced by Blue Sky Studios and directed by Carlos Saldanha.  The title refers to the Brazilian city of Rio de Janeiro, where the film is set.  The film features the voices of Jesse Eisenberg, Anne Hathaway, Jemaine Clement, Leslie Mann, George Lopez, and Jamie Foxx.  It tells the story of Blu (Eisenberg), a male Spix's macaw who is taken to Rio de Janeiro to mate with a free-spirited female Spix's macaw, Jewel (Hathaway).  The two eventually fall in love, and together they have to escape from being smuggled by Nigel (Clement), a cockatoo.  The theme song, "Telling the World" was performed by Taio Cruz. The Peanuts Movie (known in some countries as Snoopy and Charlie Brown: The Peanuts Movie) is a 2015 American 3D computer-animated comedy film produced by Blue Sky Studios and distributed by 20th Century Fox, based on Charles M. Schulz's comic strip "Peanuts".  The film is directed by Steve Martino and written by Craig and Bryan Schulz (Schulz's son and grandson, respectively), and Cornelius Uliano, and stars the voices of Noah Schnapp as Charlie Brown and, via archival recordings, Bill Melendez as Snoopy and Woodstock.  It is the fifth full-length "Peanuts" film, and the first feature film in 35 years.  It commemorates the 65th anniversary of the comic strip and the 50th anniversary of the TV special "A Charlie Brown Christmas", and was released on November 6, 2015. Ice Age: Collision Course is a 2016 American computer animated comedy film produced by Blue Sky Studios.  It is the fifth installment in the "Ice Age" film series and the sequel to "" (2012).  It was directed by Mike Thurmeier and co-directed by Galen Tan Chu, and written by Michael Wilson, Michael Berg and Yoni Brenner.
Answer: Carlos Saldanha