Question: In what part of California is the location of the Pacific Zen Institute?

full_context: Document 1: Santa Rosa, California: Santa Rosa is a city in and the county seat of Sonoma County, California, United States. Its estimated 2014 population was 174,170. Santa Rosa is the largest city in California's Redwood Empire, Wine Country and the North Bay; the fifth most populous city in the San Francisco Bay Area after San Jose, San Francisco, Oakland, and Fremont; and the 28th most populous city in California.
Document 2: Santa Rosa Creek Reservoir: Santa Rosa Creek Reservoir is a reservoir in Spring Lake Regional Park in the city of Santa Rosa, California, USA. It is impounded by an earthen dam built in 1963 and owned by the Sonoma County Water Agency.
Document 3: Rosenberg's Department Store: Rosenberg's Department Store is located at Fourth and D Streets in downtown Santa Rosa, California. The structure is the most significant example of the Streamline Moderne style in Santa Rosa, and was the tallest building in the city for many years.
Document 4: Pacific Academy: Pacific Academy is a private Christian school in Surrey, British Columbia, Canada that spans from preschool to Grade 12. The school has 4 classes per grade, and has over 200 staff members as well as 1500 students. It was started by Jim Pattison, a billionaire who donated money to create Pacific Academy. Pacific Academy also has an outreach program (PAOS) that spans the far reaches of the globe. For example, it supports the Kibaale community schools in Uganda. Pacific Academy is considered to be one of the most prestigious high schools in the Lower Mainland, and has one of the highest academic performance in the province of British Columbia. Pacific Academy was ranked by the Fraser Institute in the school year of 2017/2018, as 7th out of 251 British Columbian Secondary Schools.
Document 5: San Francisco Taiko Dojo: San Francisco Taiko Dojo, founded in 1968 by Grand Master Seiichi Tanaka, was the first taiko group in North America, and has been seen as the primary link between the Japanese and North American branches of the art form. Additionally, Tanaka's belief that learning to play taiko only requires a genuine interest in the art form (rather than Japanese ethnicity or heritage), has greatly contributed to taiko's success and growth outside Japan.
Document 6: New Delhi: In 2007, the Japanese Buddhist organisation Nipponzan Myohoji decided to build a Peace Pagoda in the city containing Buddha relics. It was inaugurated by the current Dalai Lama.
Document 7: Naval Auxiliary Landing Field Santa Rosa: Naval Auxiliary Landing Field (NALF) Santa Rosa, California, also known as Naval Auxiliary Air Station, Santa Rosa, was a military airport located in Santa Rosa, California, in Sonoma County, California, USA.
Document 8: Santa Rosa, California: Santa Rosa (lit. Spanish for ``Saint Rose '') is a city in and the county seat of Sonoma County, in California's Wine Country. Its estimated 2016 population was 175,155. Santa Rosa is the largest city in California's Redwood Empire, Wine Country and the North Bay; the fifth most populous city in the San Francisco Bay Area after San Jose, San Francisco, Oakland, and Fremont; and the 28th most populous city in California.
Document 9: Pacific Coast Air Museum: The Pacific Coast Air Museum, in Santa Rosa, California, is a non-profit organization dedicated to promoting and preserving aviation history through the acquisition, restoration, and display of historic aircraft. The museum displays a varied collection of over 30 American military, propeller, and jet aircraft.
Document 10: Pacific Zen Institute: The Pacific Zen Institute (PZI), is a Zen Buddhist practice center in Santa Rosa, California. Established in 1999, it has several affiliate centers in the lineage of John Tarrant, a dharma heir of Robert Baker Aitken, and formerly of the Sanbo Kyodan school of Zen.
Document 11: Graton, California: Graton is an unincorporated town and census-designated place (CDP) in west Sonoma County, California, United States. The population was 1,707 at the 2010 census. Graton's ZIP code is 95444. The town also has a culinary reputation attributed to two restaurants in the area.
Document 12: San Francisco: San Francisco (initials SF) (/ ˌsæn frənˈsɪskoʊ /, Spanish for Saint Francis; Spanish: (san franˈsisko)), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. The consolidated city - county covers an area of about 47.9 square miles (124 km), mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area. It is the fourth-most populous city in California, and the 13th-most populous in the United States, with a 2016 census - estimated population of 870,887. The population is projected to reach 1 million by 2033. As of 2016, San Francisco County was the 7th highest - income county in the United States, with a per capita personal income of $110,418.
Document 13: Dorji Wangchuk: Between 1992 and 1996, he taught Tibetan Buddhist monks and nuns in monastic seminaries in India. Since 1998, he has been teaching and researching at the University of Hamburg in various capacities. He also taught a term each at the University of Copenhagen, McGill University, and Renmin University of China. Currently he is a professor for Tibetology (“Tibetan (Buddhist) Studies”) at the Department of Indian and Tibetan Studies, Asien-Afrika-Institut, Universität Hamburg. He is also the founder and director of the Khyentse Center for Tibetan Buddhist Textual Scholarship (KC-TBTS), a research center within the Department of Indian and Tibetan Studies, Asien-Afrika-Institut, Universität Hamburg.
Document 14: PJ Hirabayashi: Patti Jo "PJ" Hirabayashi is one of the pioneers of the North American Taiko movement. She serves as the Artistic Director and founding member of San Jose Taiko, the third taiko group to form in the United States.
Document 15: Robert Nadeau (aikidoka): After Training in Japan with the founder of Aikido, Morihei Ueshiba from 1960-1962 Nadeau returned to Northern California and opened a series of martial art schools sharing space with first Professor Sig Kuferath and then Richard Bunch through whom he has had on-going contact with several notable Ju-Jitsu schools and which eventually led to the formation of the California Aikido Association. He is one of three division heads of the California Aikido Association and holds a teaching certification signed by Morihei Ueshiba and Kisshomaru Ueshiba. He is also the founder and head instructor of City Aikido of San Francisco, Aikido of San Jose, and Aikido of Mountain View, CA.
ground_truth: Sonoma County
sub_queries: Pacific Zen Institute >> location Answer: Santa Rosa
what part of california is Santa Rosa in Answer: Sonoma County