Question: Cécile Corbel worked for the animation studio based in what prefecture in Tokyo?

Context paragraphs:
Cécile Corbel discography: This is the discography of French singer-songwriter and harpist Cécile Corbel.  It consists of five studio albums, three compilation albums, three soundtrack albums, an extended play, and at least three singles.  She has also participated in two cast recordings and various other albums.

John Lemmon Films: John Lemmon Films is a traditional character animation studio based in Charlotte, North Carolina, United States, and is listed among five “prominent animation houses”.  The company was founded in 1984 by John Lemmon and Mike Rosinski.  Initially the animation studio worked exclusively in clay animation, but has since diversified into stop-motion, 2D animation and Flash animation, as well as web game design.  The company has produced clay animated TV commercials for clients including: Disney, Cartoon Network and Dairy Queen.  The studio has created clay-animated versions of well-known products, including the Coleman lantern, and has produced clay animated spots for Tandy Corporation’s chain of stores called McDuff Electronics and for Cedar Point.

Pilot (studio): Pilot is/was a Russian animation studio based in Moscow.  It was founded in 1988 by Aleksandr Tatarskiy, Igor Kovalyov and Anatoliy Prokhorov, becoming the first private animation studio in the Soviet Union.

Studio Ghibli: Studio Ghibli, Inc. (Japanese: 株式会社スタジオジブリ , Hepburn: Kabushiki-gaisha Sutajio Jiburi ) is a Japanese animation film studio based in Koganei, Tokyo, Japan.  The studio is best known for its anime feature films, and has also produced several short films, television commercials, and one television film.  It was founded on 15 June 1985, after the success of "Nausicaä of the Valley of the Wind" (1984), with funding by Tokuma Shoten.

Cécile Corbel: Cécile Corbel (born 28 March 1980, Pont-Croix, Finistère, France) is a French and Breton singer, harpist, and composer.  She has released five albums of original music and worked for Studio Ghibli as a composer for its 2010 film, "The Borrower Arrietty".  Corbel sings in many languages including French, Italian, Breton, and English and has done songs in German, Spanish, Irish, Turkish, and Japanese.  Her lifelong partner is songwriter Simon Caby, who is also her co-composer.

Studio Chizu: Studio Chizu is a Japanese animation studio based in Suginami, Tokyo, Japan.  It was cofounded by Mamoru Hosada and Yuichiro Saito in 2011.  Studio Chizu has won two Japan Academy Prize for Animation of the Year awards.

P.A.Works: P.A.Works Corporation (株式会社ピーエーワークス , Kabushiki-gaisha Pī Ē Wākusu , short for Progressive Animation Works) is a Japanese animation studio established on November 10, 2000 and is located in Nanto, Toyama, Japan.  The company's president and founder Kenji Horikawa once worked for Tatsunoko Production, Production I.G, and Bee Train before forming P.A.Works in 2000.  The main office is located in Toyama, Japan, which is where the drawing and digital photography take place, and production and direction takes place in their Tokyo office.  The company is also involved with animation in video games, as well as collaborating in the past with Production I.G and Bee Train to create anime.  In January 2008, P.A.Works produced "True Tears", their first anime series as the main animation studio involved in the production process.

Soyuzmultfilm: Soyuzmultfilm (Russian: Союзмультфильм ; ]    , "Union Cartoon") is a Russian animation studio based in Moscow.  Over the years it has gained international attention and respect, garnering numerous awards both at home and abroad.  Noted for a great variety of style, it is regarded as the most influential animation studio of the former Soviet Union.  The studio has produced 1528 films through 2007.

PAJ animation studio: PAJ animation studio is a persian animation film studio based in IRAN.  The studio produced several short films, television commercials, and one feature film.  It was founded on 30 October 2007.  PAJ animation studio produced a mini series called the hidden lives in 2017 .

Kennedy Cartoons: Kennedy Cartoons was an animation studio based in Toronto and Manila led by Glen Kennedy, who formerly worked as an animation supervisor for Hanna-Barbera and Filmation during the 1980s.  His animation can be seen in "A Pup Named Scooby-Doo" and "" among others.  Dan Lee, another Kennedy Cartoons animator, went on to Pixar before his death in 2005.  In its "Tiny Toons" and "Darkwing Duck" days the studio outsourced some scenes of animation to StarToons, located in Chicago.  Tiny Toons also gained Kennedy an Emmy Award and a Primetime Emmy nomination.  The studio provided animation for the following cartoons:

Supporting paragraphs: Cécile Corbel Studio Ghibli
Answer: Koganei