Question: What is the main occupation of Hiroshi Sakaguchi, founder of Ki Arts, a traditional Japanese company in Northern California and who features in the 2010 documentary film directed by Tao Ruspoli, based on Martin Heidegger's philosophy?

Context paragraphs:
Makoto Fujimura: Makoto Fujimura (born 1960) is a 21st-century artist.  He graduated with a B.A. from Bucknell University, then studied in a traditional Japanese painting doctorate program for several years at Tokyo National University of Fine Arts and Music with several notable artists such as Takashi Murakami and Hiroshi Senju.  He was the first non-native to participate in the Japanese Painting Doctorate Program, which dates back to 15th century.  His bicultural arts education led his style towards a fusion between fine art and abstract expressionism, together with the traditional Japanese art of Nihonga and Kacho-ga (bird-and-flower painting tradition).

Sean Dorrance Kelly: Sean Dorrance Kelly is an American philosopher and professor of philosophy at Harvard University.  He is known for his expertise on various aspects of the philosophical, phenomenological, and cognitive neuroscientific nature of human experience.  He is featured in Tao Ruspoli's film "Being in the World".

John Haugeland: John Haugeland ( ; March 13, 1945 – June 23, 2010) was a professor of philosophy, focused on the philosophy of mind, cognitive science, phenomenology, and Heidegger.  He spent most of his career at the University of Pittsburgh, followed by the University of Chicago from 1999 until his death.  He is featured in Tao Ruspoli's film "Being in the World".

Being in the World: Being in the World is a 2010 documentary film directed by Tao Ruspoli.  The film is based on Martin Heidegger's philosophy and is inspired by Hubert Dreyfus.  It features a number of prominent philosophers.

Hans Sluga: Hans D. Sluga (] ; born April 24, 1937) is a German academic, who has served as a lecturer in philosophy at University College London and is now a professor of philosophy at the University of California, Berkeley, where he has taught since 1970.  He teaches and writes on topics in analytic philosophy as well as on political philosophy and has been particularly influenced by the thought of Gottlob Frege, Ludwig Wittgenstein, Martin Heidegger, Friedrich Nietzsche, and Michel Foucault.

Mark Wrathall: Mark Wrathall (born 1965) is professor of Philosophy at the University of California, Riverside.  His main interests include phenomenology, existentialism, the phenomenology of religion, the philosophy of popular culture, and the philosophy of law.  He is considered a leading interpreter of the philosophy of Martin Heidegger.  Wrathall is featured in Tao Ruspoli's film "Being in the World".  According to a recent reviewer of Wrathall's latest book, "Wrathall's writing is clear and comprehensive, ranging across virtually all of Heidegger's collected works... Wrathall's overall interpretation of Heidegger's work is crystal clear, compelling, and relevant."

Hiroshi Sakaguchi: Hiroshi Sakaguchi is a Japanese carpenter and the founder of Ki Arts (1985), a traditional Japanese company in Northern California.  He is featured in Tao Ruspoli's film Being in the World.

Fix (film): Fix is a 2008 feature film directed by Tao Ruspoli starring Shawn Andrews, Olivia Wilde, Megalyn Echikunwoke, Tao Ruspoli, Dedee Pfeiffer and Andrew Fiscella.

Human, All Too Human (TV series): Human, All Too Human is a three-part 1999 documentary television series co-produced by the BBC and RM Arts.  It follows the lives of three prominent European philosophers: Friedrich Nietzsche, Martin Heidegger and Jean-Paul Sartre.  The theme revolves heavily around the school of philosophical thought known as Existentialism, although the term had not been coined at the time of Nietzsche's writing and Heidegger declaimed the label.

Richard Polt: Richard F. H. Polt is a professor of philosophy at Xavier University in Cincinnati, Ohio.  He has written about and translated works by Martin Heidegger.  Polt is a typewriter enthusiast active on the Typosphere and a former editor of the quarterly ETCetera publication about manual typewriters.  He is the author of three books, and he recently contributed to the documentary "" that features Tom Hanks.

Supporting paragraphs: Hiroshi Sakaguchi Being in the World
Answer: carpenter