Question: Of which county is Elizabeth May's birth city the seat?

full_context: Document 1: 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 2: San Diego: The members of the city council are each elected from single member districts within the city. The mayor and city attorney are elected directly by the voters of the entire city. The mayor, city attorney, and council members are elected to four-year terms, with a two-term limit. Elections are held on a non-partisan basis per California state law; nevertheless, most officeholders do identify themselves as either Democrats or Republicans. In 2007, registered Democrats outnumbered Republicans by about 7 to 6 in the city, and Democrats currently (as of 2015[update]) hold a 5-4 majority in the city council. The current mayor, Kevin Faulconer, is a Republican.
Document 3: Boston: Federally, Boston is split between two congressional districts. The northern three-fourths of the city is in the 7th district, represented by Mike Capuano since 1998. The southern fourth is in the 8th district, represented by Stephen Lynch. Both are Democrats; a Republican has not represented a significant portion of Boston in over a century. The state's senior member of the United States Senate is Democrat Elizabeth Warren, first elected in 2012. The state's junior member of the United States Senate is Democrat Ed Markey, who was elected in 2013 to succeed John Kerry after Kerry's appointment and confirmation as the United States Secretary of State.
Document 4: Deerfield Dam: Deerfield Dam is a dam impounding Castle Creek in the Black Hills of South Dakota. The dam creates Deerfield Reservoir within the Black Hills National Forest.
Document 5: Elizabeth May: While May's family home is in Margaree Harbour, Cape Breton Island she moved her permanent residence to Sidney, British Columbia, in 2010. On May 2, 2011, she became the first member of the Green Party of Canada to be elected as a Member of Parliament.
Document 6: 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 7: Elizabeth May (South Dakota politician): Elizabeth May (born January 1, 1961 in Belle Fourche, South Dakota) is an American politician and a Republican member of the South Dakota House of Representatives representing District 27 since January 11, 2013.
Document 8: Elizabeth Crowley (Rhode Island politician): Elizabeth A. Crowley (born October 22, 1951) is an American politician and a Democratic member of the Rhode Island Senate representing District 16 since January 2009.
Document 9: A. H. Kemper: Kemper was a member of the South Dakota House of Representatives from 1941 to 1944. He was a Republican. Kemper was elected from Sioux Falls, where he had lived.
Document 10: 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 11: 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 12: Selina Meyer: The show's original opening sequence details some of her career. She was a United States Senator from Maryland (where she was born and raised). She announced her candidacy for the 2012 presidential election. Media outlets initially praised her and had high hopes for her becoming the President, with headlines such as ``Magic Meyer ''and`` Is this Meyer's Moment?''. Despite strong initial victories, she ultimately is defeated by primary challenger Stuart Hughes on Super Tuesday, and suspends her campaign. He then selects her as his running mate, and is elected to the presidency.
Document 13: Vern Larson: Vernon L. Larson (born October 25, 1948 in Vivian, South Dakota) is an American politician and member of the Republican Party from the U.S. state of South Dakota.
Document 14: 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 15: Crow Flies High State Recreation Area: Crow Flies High State Recreation Area is a day-use state park in Mountrail County, North Dakota, west of the community of New Town. The site provides scenic views of Lake Sakakawea. Signs describe the location's role in local history, including its significance in the explorations of Lewis and Clark. The footprint of the drowned town of Sanish, now lost below the reservoir's waves, can be seen at times of low water.
ground_truth: Butte County
sub_queries: Elizabeth May >> place of birth Answer: Belle Fourche
Belle Fourche >> capital of Answer: Butte County