Question: Which city is in the county in which Michael Porter was born?

full_context: Document 1: Terry Porter: In 1,274 career games, Porter averaged 12.2 points, 5.6 assists and 1.24 steals during a career that included two All-Star berths (1991, 1993), two trips to the NBA Finals (1990, 1992) and 15,586 career points. He is 12th on the NBA's all-time assist list (7,160). Porter has played for five of the top 36 coaches (games won) in NBA history: Pat Riley (1,210), Rick Adelman (945), Jack Ramsay (864), Gregg Popovich (797) and Flip Saunders (636).
Document 2: Belle Fourche Dam: The Belle Fourche Dam, also known as Orman Dam, is a dam on Owl Creek in Butte County, South Dakota, USA, approximately eight miles east of Belle Fourche, South Dakota, along U.S. Route 212. Its construction created the Belle Fourche Reservoir, the Belle Fourche National Wildlife Refuge, and the Rocky Point Recreation Area.
Document 3: Cold Brook Dam: Cold Brook Dam is a dam in Fall River County, South Dakota in the southwestern part of the state, south of the Black Hills.
Document 4: Grizzly Flats, California: Grizzly Flats (formerly, Grizzly Flat and Chickenmasee) is a census-designated place in El Dorado County, California. It is located southeast of Camino, at an elevation of 3868 feet (1179 m). Grizzly Flats is the nearest city to Baltic Peak, a small peak to the northwest. The population at the 2010 census was 1,066.
Document 5: Kingsley Dam: Kingsley Dam is located on the east side of Lake McConaughy in central Keith County, Nebraska, and is the second largest hydraulic fill dam in the world. It was built as part of the New Deal project. The dam is tall, long, and wide at its base. On the east side of the dam is Lake Ogallala and on the south side is the Kingsley Hydroelectricity Plant. The Nebraska Game and Parks Commission and Central Nebraska Public Power and Irrigation District are also located in this area. Kingsley Dam, the Kingsley Hydroelectricity Plant, the Morning Glory Spillway, and the Outlet Tower – a large structure near the dam used to release water from the lake – are main visual icons of Lake McConaughy.
Document 6: Michael Buffer: Michael Buffer (born November 2, 1944) is an American ring announcer for boxing and professional wrestling matches. He is known for his trademarked catchphrase, ``Let's get ready to rumble! ''and for pioneering a distinct announcing style in which he rolls certain letters and adds other inflections to a fighter's name. His half - brother is UFC announcer Bruce Buffer.
Document 7: Land, California: Land is a former settlement in Butte County, California, United States. It was located west-southwest of Bidwell's Bar on the Western Pacific Railroad, at an elevation of 902 feet (275 m). Land is now covered by Lake Oroville. The place was named for A.H. Land, a lumber company president.
Document 8: Soto, California: Soto is a ghost town in Butte County, California, United States. It was located northwest of Chico on the Southern Pacific Railroad, at an elevation of 184 feet (56 m). It still appeared on maps as of 1904.
Document 9: Lake Oahe: Lake Oahe (oh-WAH'-hee) is a large reservoir behind Oahe Dam on the Missouri River; it begins in central South Dakota and continues north into North Dakota in the United States. The lake has an area of and a maximum depth of . By volume, it is the fourth-largest reservoir in the US. Lake Oahe has a length of approximately and has a shoreline of . 51 recreation areas are located along Lake Oahe, and 1.5 million people visit the reservoir every year. The lake is named for the 1874 Oahe Indian Mission.
Document 10: Gridley, California: Gridley is a city in Butte County, California, United States, south of Chico, California. The estimated 2019 population was 7,224. California State Route 99 runs through Gridley and Interstate 5 and California State Route 70 are both nearby.
Document 11: Keyhole State Park: The Keyhole Reservoir, an impoundment of the Belle Fourche River, was formed by the Keyhole Dam project of the United States Bureau of Reclamation, completed in 1952. The reservoir has a total capacity of 334,200 acre-feet and water surface of 13,700 acres, which provides storage for irrigation, flood control, fish and wildlife conservation, recreation, sediment control, and municipal and industrial water supply. Although located in Wyoming, the reservoir's waters are allocated by compact to go 90 percent to South Dakota and 10 percent to Wyoming.
Document 12: Michael Buffer: Michael Buffer (born November 2, 1944) is an American ring announcer for boxing and professional wrestling matches. He is known for his trademarked catchphrase, ``Let's get ready to rumble! '', and for pioneering a distinct announcing style in which he rolls certain letters and adds other inflections to a fighter's name. His half - brother is UFC announcer Bruce Buffer.
Document 13: Michael Porter (professional wrestling): Porter was born in Gridley, California, and began his career in 1969 in the San Francisco Bay Area and Sacramento region working under the guidance of legendary promoters Roy Shire, Louie Miller and Terry Garvin. Porter was best known for working as a house show ring announcer for the World Wrestling Federation (now World Wrestling Entertainment) from 1988 to 1993 (mostly on the west coast, including the historic Cow Palace in San Francisco, Oakland-Alameda County Coliseum Arena - now Oracle Arena - in Oakland and ARCO Arena - now Sleep Train Arena - in Sacramento). He worked security at "WrestleMania VII" at the Los Angeles Sports Arena in 1991.
Document 14: Mike Miller (wrestler): James Michael Hillman (born October 14, 1951), better known by the ring name "Mean" Mike Miller, is an American professional wrestler who had great success in Pacific Northwest Wrestling. Mean Mike was brought in to professional wrestling by Herb Welch. In Pacific Northwest Wrestling he wrestled for many years and held the NWA Pacific Northwest Heavyweight Championship and NWA Pacific Northwest Tag Team Championship a combined 11 times. During his career Mean Mike faced many wrestling legends such as Rip Oliver, Bobby Jaggers, Tom Prichard, Jerry Lawler, Chief Jay Strongbow, Brett Sawyer, Billy Jack Haynes, and Steve Doll.
Document 15: Bidwell, California: Bidwell is a former settlement in Butte County, California, United States. It was located west of Bidwell's Bar on the Western Pacific Railroad, and Feather River Railway at an elevation of 902 feet (275 m). The settlement was near the Bidwell-Sacramento River State Park, and has been inundated by Lake Oroville.
ground_truth: Belle Fourche
sub_queries: Michael Porter >> place of birth Answer: Gridley
Gridley >> located in the administrative territorial entity Answer: Butte County
Butte County >> contains administrative territorial entity Answer: Belle Fourche