Question: What part of California is the city where KHTH is located in?

full_context: Document 1: KFRC-FM: KFRC-FM (106.9 FM) is a commercial radio station in San Francisco, California, serving the San Francisco Bay Area. It currently simulcasts sister station KCBS, which carries an all-news format. The station transmits its signal from Mount Beacon atop the Marin Headlands above Sausalito, California, while studios are located in downtown San Francisco.
Document 2: KNCI: KNCI (105.1 FM, "New Country 105.1") is a commercial radio station in Sacramento, California, United States. The station is owned by Bonneville International. KNCI carries a country music format, alongside a classic country format known as "The Ranch" and a simulcast of sports talk KHTK on HD Radio subchannels.
Document 3: 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 4: 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 5: 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 6: KHTH: KHTH-FM is a commercial radio station in Santa Rosa, California, broadcasting on 101.7 FM. It is owned by Lawrence Amaturo, through licensee
Document 7: 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 8: 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 9: 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 10: KKHK: KKHK (95.5 FM, "Bob FM") is a commercial adult hits radio station in Carmel, California, broadcasting to the Santa Cruz-Monterey-Salinas, California area on 95.5 FM. Its studios are in Monterey while its transmitter is located east of the city.
Document 11: 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 12: KHTS-FM: KHTS-FM (93.3 FM) is a top 40 (CHR) station that is licensed to El Cajon, California and serves the San Diego market. The station is owned by , through licensee Citicasters, and brands as "Channel 93-3", sounded out as "Channel 9-3-3". The station's studios are located in San Diego's Serra Mesa area, while the transmitter is located in Chollas View, which is east of Balboa Park and west of Emerald Hills, sharing facilities with KLSD. The station is available in HD Radio; the HD2 subchannel airs an LGBT-leaning dance hits format, carrying iHeart's Pride Radio network.
Document 13: KSCO: KSCO (1080 AM) is a radio station broadcasting a news/talk format located in Santa Cruz, California. It can be heard over much of Central California during the day. Since 1991, it has been owned by the Zwerling family. Both son Michael and late mother Kay Zwerling take an active role in the station with the former regularly hosting the call-in show "Saturday Special" and the latter writing and voicing politically conservative commentaries on a variety of topics, especially politics and current events. On January 3, 2017 Kay Zwerling died at 95 years old.
Document 14: Melbourne: A long list of AM and FM radio stations broadcast to greater Melbourne. These include "public" (i.e., state-owned ABC and SBS) and community stations. Many commercial stations are networked-owned: DMG has Nova 100 and Smooth; ARN controls Gold 104.3 and KIIS 101.1; and Southern Cross Austereo runs both Fox and Triple M. Stations from towns in regional Victoria may also be heard (e.g. 93.9 Bay FM, Geelong). Youth alternatives include ABC Triple J and youth run SYN. Triple J, and similarly PBS and Triple R, strive to play under represented music. JOY 94.9 caters for gay, lesbian, bisexual and transgender audiences. For fans of classical music there are 3MBS and ABC Classic FM. Light FM is a contemporary Christian station. AM stations include ABC: 774, Radio National, and News Radio; also Fairfax affiliates 3AW (talk) and Magic (easy listening). For sport fans and enthusiasts there is SEN 1116. Melbourne has many community run stations that serve alternative interests, such as 3CR and 3KND (Indigenous). Many suburbs have low powered community run stations serving local audiences.
Document 15: Santa Rosa Rugby Club: The Santa Rosa Rugby Club is a men's rugby union team based in and around Santa Rosa, California. The club was founded in 1971. The team plays in the Northern California Rugby Football Union at the Division I level. The Santa Rosa Rugby Club won back to back national championships in 1994-95.
ground_truth: Sonoma County
sub_queries: What city is KHTH located? Answer: Santa Rosa
what part of california is Santa Rosa in Answer: Sonoma County