Question: In what state is the county where Elk Prairie Township can be found?

full_context: Document 1: Wood County, Wisconsin: Wood County comprises the Wisconsin Rapids-Marshfield, WI Micropolitan Statistical Area and is included in the Wausau-Stevens Point-Wisconsin Rapids, WI Combined Statistical Area.
Document 2: Prairie Creek Township, Logan County, Illinois: Prairie Creek Township is located in Logan County, Illinois. As of the 2010 census, its population was 487 and it contained 194 housing units.
Document 3: McClellan Township, Jefferson County, Illinois: McClellan Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 1,255 and it contained 534 housing units.
Document 4: Elk Grove Village, Illinois: Elk Grove Village is a village located in northeastern Illinois adjacent to O'Hare International Airport and is a near northwest suburb, touching the city of Chicago. It is one of the Chicago metropolitan area's principal villages due to its large industrial park, located on the eastern border of the village. The village is located primarily in Cook County with a small portion in DuPage County. The population was 33,127 at the 2010 census. As the name suggests, Elk Grove Village is home to a small herd of elk kept in a grove at the eastern edge of the Busse Woods forest preserve for which the grove is named. Elk are not native to the area but were brought by train from Montana by an early resident, William Busse, in the 1920s. The elk are currently maintained by the Chicago Zoological Society veterinary staff and the Busse Woods Forest Preserve wildlife biologists.
Document 5: El Paso Township, Woodford County, Illinois: El Paso Township is located in Woodford County, Illinois. As of the 2010 census, its population was 3,459 and it contained 1,387 housing units. El Paso Township formed from Palestine Township in September, 1861. El Paso is located at 40°44'20" North, 89°0'58" West (40.738800, -89.016034).
Document 6: Moore's Prairie Township, Jefferson County, Illinois: Moore's Prairie Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 347 and it contained 142 housing units.
Document 7: Grant County, Wisconsin: Grant County comprises the Platteville, WI Micropolitan Statistical Area. It is in the tri-state area of Illinois, Iowa, and Wisconsin, and is crossed by travelers commuting to Madison from a number of eastern Iowan cities, and by residents of northern Illinois traveling to the Twin Cities or La Crosse, Wisconsin.
Document 8: Watertown (town), Wisconsin: Watertown is a town in Jefferson County, Wisconsin, United States. The population was 1,975 at the 2010 census. The unincorporated community of Ebenezer is located in the town.
Document 9: Buffalo Prairie Township, Rock Island County, Illinois: Buffalo Prairie Township is located in Rock Island County, Illinois. As of the 2010 census, its population was 824 and it contained 359 housing units. Buffalo Prairie Township was originally named Buffalo Township, but changed its name to Copper Township October 1, 1857, and then from Copper to Buffalo Prairie.
Document 10: Jefferson, Jefferson County, Wisconsin: Jefferson is a town in Jefferson County, Wisconsin, United States. The population was 2,178 at the 2010 census. The city of Jefferson is located partially within the town. The census-designated place of Helenville is also located in the town.
Document 11: Dodds Township, Jefferson County, Illinois: Dodds Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 2,647 and it contained 1,163 housing units.
Document 12: Elk Prairie Township, Jefferson County, Illinois: Elk Prairie Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 725 and it contained 350 housing units.
Document 13: Beaver Dam Micropolitan Statistical Area: The Beaver Dam Micropolitan Statistical Area is an area in east central Wisconsin. Its principal city is Beaver Dam, and it includes all of Dodge County. The Beaver Dam Micropolitan Statistical Area (MSA) and Fond du Lac MSA form the Fond du Lac Beaver Dam Combined Statistical Area. The MSA had an estimated population of 88,489.
Document 14: Watertown High School (Wisconsin): Watertown High School is a high school located in Watertown, Wisconsin, in Dodge County. It serves grades nine through twelve. The school is operated by the Watertown Unified School District.
Document 15: Jefferson County, Wisconsin: Jefferson County comprises the Watertown-Fort Atkinson, WI Micropolitan Statistical Area, which is also included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area.
ground_truth: WI
sub_queries: Elk Prairie Township >> located in the administrative territorial entity Answer: Jefferson County
Jefferson County >> located in the administrative territorial entity Answer: WI