Question: The head of animation at Walt Disney Animation directed a film animated by who?

Context paragraphs:
Walt Disney Pictures: Walt Disney Pictures, Inc. is an American film production company and a subsidiary of Walt Disney Studios, owned by The Walt Disney Company.  The division is based at the Walt Disney Studios in Burbank, California, and is the main producer of live-action feature films within the Walt Disney Studios unit.  It took on its current name in 1983.  Today, in conjunction with the other units of Walt Disney Studios, Walt Disney Pictures is classified as one of Hollywood's "Big Six" film studios.  Films produced by Walt Disney Animation Studios and Pixar Animation Studios are also released under this brand.

Clay Kaytis: Clay Kaytis is an American animator and film director, best known for directing the animated film "The Angry Birds Movie".  He has been the head of animation at Walt Disney Animation Studios.

Walt Disney Classics: Walt Disney Classics was a brand name used by Walt Disney Home Video on their American, Japanese, European, and Australian home video releases of List of Walt Disney Animation Studios features.  The last title in the Classics line from 1984–1994 was "The Fox and the Hound".  With the release of "Snow White and the Seven Dwarfs", all the existing titles in the Classics line were replaced with the Masterpiece Collection line and the Classics line was canceled in the United States and Canada.  Cassette copies of the original Classics series became much sought-after, and are very popular with collectors, since most retailers had the first home video release for Disney animated features in their stores up to the time when the label was discontinued.  Animated features and other films containing animation (such as "Mary Poppins" and "Pete's Dragon") continued to be released under the "Walt Disney Classics" label and its foreign language equivalents until around 2007 throughout Europe, and "Walt Disney Meisterwerke", the German equivalent series, is still in operation as of 2010 through its broader "Special Collection" range.

The Angry Birds Movie: The Angry Birds Movie (or simply Angry Birds) is a 2016 3D computer-animated comedy film based on the video game series of the same name, but it can also be interpreted to be a direct prequel to, or origin story behind the original game.  Produced by Rovio Animation, it was animated by Sony Pictures Imageworks.  It was directed by Clay Kaytis and Fergal Reilly in their directorial debuts, and written by Jon Vitti.  The film stars Jason Sudeikis, Josh Gad, Danny McBride, Maya Rudolph, Kate McKinnon, Sean Penn, Tony Hale, Keegan-Michael Key, Bill Hader and Peter Dinklage.  It is an international co-production between the United States and Finland.

Paperman: Paperman is a 2012 American black-and-white computer-cel animated romantic comedy short film produced by Walt Disney Animation Studios and directed by John Kahrs.  The short blends traditional animation and computer animation, and won both the Academy Award for Best Animated Short Film at the 85th Academy Awards and the Annie Award for Best Animated Short Subject at the 40th Annie Awards.  "Paperman" was the first animated short film produced by Walt Disney Animation Studios to win an Academy Award since "It's Tough to Be a Bird" in 1970.

List of Disney animated shorts: This is a list of animated short films produced by Walt Disney and Walt Disney Animation Studios from 1921 to the present.  This includes films produced at the Laugh-O-Gram Studio which Disney founded in 1921 as well as the animation studio now owned by The Walt Disney Company, previously called the Disney Brothers Cartoon Studio (1923), The Walt Disney Studio (1926), Walt Disney Productions (1929), and Walt Disney Feature Animation (1986).

Meet the Robinsons: Meet the Robinsons is a 2007 American computer-animated science fiction comedy film produced by Walt Disney Animation Studios and released by Walt Disney Pictures on March 30, 2007.  The 47th Disney animated feature film, it was released in standard and Disney Digital 3-D versions.  The film is loosely based on characters from the children's book "A Day with Wilbur Robinson", by William Joyce.  The voice cast includes Jordan Fry, Wesley Singerman, Harland Williams, Tom Kenny, Steve Anderson, Laurie Metcalf, Adam West, Tom Selleck, and Angela Bassett.  It was the first film released after John Lasseter became chief creative officer of Walt Disney Animation Studios.

Armand Serrano: Armand Serrano Armand is an artist who is known for his works in animated feature film studios such as Walt Disney Animation Studios and Sony Pictures Animation.  He has been in the animation industry for more than 2 decades and currently serving as Visual Development artist for Walt Disney Animation Studios in Burbank, California.  He is also known as a lecturer in the field of animation and design.  He conducts workshops and demos internationally.

Winnie the Pooh (2011 film): Winnie the Pooh is a 2011 American animated buddy musical comedy film produced by Walt Disney Animation Studios and released by Walt Disney Pictures.  It is the 51st Disney animated feature film.  Inspired by A. A. Milne's stories of the same name, the film is part of Disney's "Winnie the Pooh" franchise, the fifth theatrical "Winnie the Pooh" film released, and Walt Disney Animation Studios' second adaptation of "Winnie-the-Pooh" stories.  Jim Cummings reprises his vocal roles as Winnie the Pooh and Tigger, while series newcomers Travis Oates, Tom Kenny, Craig Ferguson, Bud Luckey, and Kristen Anderson-Lopez provide the voices of Piglet, Rabbit, Owl, Eeyore, and Kanga, respectively.  In the film, the aforementioned residents of the Hundred Acre Wood embark on a quest to save Christopher Robin from an imaginary culprit while Pooh deals with a hunger for honey.  The film is directed by Stephen Anderson and Don Hall, adapted from Milne's books by a story team led by Burny Mattinson, produced by Peter Del Vecho, Clark Spencer, John Lasseter, and Craig Sost, and narrated by John Cleese.

Hercules: Zero to Hero: Hercules: Zero to Hero is a 1999 comedy-drama adventure and fantasy animated television film produced by Walt Disney Television Animation, Walt Disney Animation Australia, Walt Disney Animation Japan and Toon City Animation, Inc., Manila, Philippines.  The film is a direct-to-video followup to 1997 animated feature "Hercules".  It was released on August 17, 1999.  The film serves as a package film combing three episodes of "Hercules: The Animated Series" as flashback segments.

Supporting paragraphs: Clay Kaytis The Angry Birds Movie
Answer: Sony Pictures Imageworks