Question: The city where WNZK is located is in what county?

full_context: Document 1: Ann Arbor, Michigan: Four major AM radio stations based in or near Ann Arbor are WAAM 1600, a conservative news and talk station; WLBY 1290, a business news and talk station; WDEO 990, Catholic radio; and WTKA 1050, which is primarily a sports station. The city's FM stations include NPR affiliate WUOM 91.7; country station WWWW 102.9; and adult-alternative station WQKL 107.1. Freeform station WCBN-FM 88.3 is a local community radio/college radio station operated by the students of the University of Michigan featuring noncommercial, eclectic music and public-affairs programming. The city is also served by public and commercial radio broadcasters in Ypsilanti, the Lansing/Jackson area, Detroit, Windsor, and Toledo.
Document 2: Detroit: Oakland County in Metro Detroit, once rated amongst the wealthiest US counties per household, is no longer shown in the top 25 listing of Forbes magazine. But internal county statistical methods – based on measuring per capita income for counties with more than one million residents – show that Oakland is still within the top 12, slipping from the 4th-most affluent such county in the U.S. in 2004 to 11th-most affluent in 2009. Detroit dominates Wayne County, which has an average household income of about $38,000, compared to Oakland County's $62,000.
Document 3: Dearborn Heights, Michigan: Dearborn Heights is a city in Wayne County, in the Detroit metropolitan area, in the State of Michigan. The population was 57,774 at the 2010 census.
Document 4: WNZK: WNZK is a radio station in Dearborn Heights, Michigan, United States. It began broadcasting October 12, 1985. It broadcasts in the AM radio band at 690 kHz during the daytime and at 680 kHz at night. This is to protect the nighttime pattern of Montreal, Quebec's CKGM, a clear-channel station on 690. WNZK is the only North American AM station to broadcast on two frequencies, at least according to the FCC online database.
Document 5: WUFL: WUFL is a non-commercial Christian AM radio station in Sterling Heights, Michigan, operating on 1030 kHz. The station broadcasts with 5,000 watts, daytime only, with coverage of the Detroit, Michigan metropolitan area. WUFL is a Class D station operating on the clear-channel frequency of 1030 AM; WBZ in Boston, Massachusetts is the dominant Class A station on this frequency.
Document 6: WNZN: WNZN (89.1 FM) – branded Power 89.1 WNZN – is a non-commercial Urban Gospel radio station licensed to Lorain, Ohio, serving Lorain County, Erie County and Huron County. The WNZN studios are located off of Kansas Avenue in the city's eastern side, while the station's transmitter site currently sits in Berlin Heights.
Document 7: Sterling Heights, Michigan: Sterling Heights is a city in Macomb County of the U.S. state of Michigan, and one of Detroit's core suburbs. As of the 2010 census, the city had a total population of 129,699. It is the second largest suburb in Metro Detroit, and the fourth largest city in Michigan. Sterling Heights consistently ranks as the safest city in Michigan with population of over 100,000.
Document 8: Detroit: Detroit is the center of a three-county urban area (population 3,734,090, area of 1,337 square miles (3,460 km2), a 2010 United States Census) six-county metropolitan statistical area (2010 Census population of 4,296,250, area of 3,913 square miles [10,130 km2]), and a nine-county Combined Statistical Area (2010 Census population of 5,218,852, area of 5,814 square miles [15,060 km2]). The Detroit–Windsor area, a commercial link straddling the Canada–U.S. border, has a total population of about 5,700,000. The Detroit metropolitan region holds roughly one-half of Michigan's population.
Document 9: WJWZ: WJWZ, also known as 97.9 Jamz, is an urban contemporary formatted radio station that serves the Montgomery Metropolitan Area, broadcasting on the FM band at a frequency of 97.9 MHz and licensed to Wetumpka, Alabama. The station is locally owned and operated by Bluewater Broadcasting Company, LLC. The station's transmitter is located in Montgomery. The station's studios are located on Wall St. in Midtown Montgomery.
Document 10: WMKM: WMKM is an AM radio station broadcasting at 1440 kHz licensed to Inkster, Michigan, and serving the Detroit radio market. Owned by Timothy Gallagher, through licensee Great Lakes Radio—Detroit, LLC, the station airs an Urban Gospel format branded as Rejoice 1440 AM. WMKM broadcasts with 1,000 watts of power with two different signal patterns for day and night (DA-2) from a six-tower array located near Ecorse and Merriman roads in Romulus, Michigan.
Document 11: Detroit: Detroit (/dᵻˈtrɔɪt/) is the most populous city in the U.S. state of Michigan, the fourth-largest city in the Midwest and the largest city on the United States–Canada border. It is the seat of Wayne County, the most populous county in the state. Detroit's metropolitan area, known as Metro Detroit, is home to 5.3 million people, making it the fourteenth-most populous metropolitan area in the United States and the second-largest in the Midwestern United States (behind Chicago). It is a major port on the Detroit River, a strait that connects the Great Lakes system to the Saint Lawrence Seaway. The City of Detroit anchors the second-largest economic region in the Midwest, behind Chicago, and the thirteenth-largest in the United States.
Document 12: Livonia, Michigan: Livonia is a city in the northwest part of Wayne County in the U.S. state of Michigan. It is a large suburb with an array of traditional neighborhoods (most of which were built in the 1950s and 1960s) connected to the metropolitan area by freeways. The population was 96,942 at the 2010 census, making it Michigan's ninth largest municipality. The municipality is a part of Metro Detroit, and is located approximately northwest of downtown Detroit, and less than two miles (3 km) from the western city limits of Detroit (Redford Township lies between the two).
Document 13: WRDT: WRDT, known on the air as "The Word AM 560, Detroit's Christian Talk", is a radio station licensed to Monroe, Michigan, serving the Detroit metropolitan area. The station broadcasts in HD Radio with 500 Watts daytime power from a transmitter located in South Monroe, Michigan, and 14 Watts nighttime power (Non-HD) from a transmitter located in Royal Oak Township, Michigan. The Royal Oak Township location shares the Greater Media tower with WCSX, WRIF & WMGC. Its low frequency and strongly directional daytime signal give the station good coverage of the Detroit market, despite the lower power.
Document 14: Highland Park, Michigan: Highland Park is a city in Wayne County in the State of Michigan, within Metro Detroit. The population was 11,776 at the 2010 census. The city is completely surrounded by Detroit except for a small portion that touches the city of Hamtramck, which is also surrounded by Detroit.
Document 15: KZOY: KZOY is a daytime-only AM station licensed for 500 watts on 1520 kHz at Sioux Falls, South Dakota. Daytime-only operation protects clear-channel stations KOKC at Oklahoma City and WWKB at Buffalo, New York. It also broadcasts on FM translator K227CZ 93.3 in Sioux Falls.
ground_truth: Wayne County
sub_queries: What city is WNZK located? Answer: Dearborn Heights
Dearborn Heights >> located in the administrative territorial entity Answer: Wayne County