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?
Sentence (from "Mark Wrathall"): Wrathall is featured in Tao Ruspoli's film "Being in the World".
Relevant evidence: No