Question: What county shares a border with the county where Black Hawk Township is located?

full_context: Document 1: Black Hawk Township, Jefferson County, Iowa: Black Hawk Township is located in Jefferson County, Iowa. The population is 314 with 161 males and 153 females. The land area is with no water area.
Document 2: Black Hawk Bridge: The Black Hawk Bridge spans the Mississippi River, joining the town of Lansing, in Allamakee County, Iowa, to rural Crawford County, Wisconsin. It is the northernmost Mississippi River bridge in Iowa.
Document 3: Dodge Township, Dubuque County, Iowa: Dodge Township is one of seventeen townships in Dubuque County, Iowa, USA. As of the 2000 census, its population was 1,204.
Document 4: Poyner Township, Black Hawk County, Iowa: Poyner Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 2581.
Document 5: 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 6: Jefferson Township, Franklin County, Ohio: Jefferson Township is situated on the northeast edge of Franklin County, Ohio as a part of the Columbus metropolitan area and situated between the Blacklick Creek, Big Walnut Creek and Swisher Creek watershed. The township is one of the seventeen townships of Franklin County, Ohio, United States. The 2010 census found 10,972 people in the township, 10,234 of whom lived in the unincorporated portions of the township. It was established on September 6, 1816.
Document 7: Cedar Falls Township, Black Hawk County, Iowa: Cedar Falls Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 325.
Document 8: Portland (community), Dodge County, Wisconsin: Portland is an unincorporated community located partially in the town of Portland in Dodge County, Wisconsin and partially in the town of Waterloo in Jefferson County, Wisconsin, United States.
Document 9: Batavia, Iowa: Batavia is a city in Jefferson County, Iowa, United States. The population was 499 at the 2010 census. It was established in 1846.
Document 10: Woodland, Dodge County, Wisconsin: Woodland is an unincorporated community located, in the town of Rubicon, in Dodge County, Wisconsin, United States. It is located at the intersection of Wisconsin Highway 67 and County highway WS.
Document 11: Dodge (CDP), Wisconsin: Dodge is an unincorporated census-designated place located in the town of Dodge, Trempealeau County, Wisconsin, United States. Dodge is south-southwest of Arcadia. Dodge has a post office with ZIP code 54625. As of the 2010 census, its population was 121.
Document 12: Fort Dodge, Iowa: Fort Dodge is a city in and the county seat of Webster County, Iowa, United States, along the Des Moines River. The population was 25,206 in the 2010 census, an increase from 25,136 in the 2000 census. Fort Dodge is a major commercial center for North Central and Northwest Iowa. It is located on U.S. Routes 20 and 169.
Document 13: Concord Township, Dodge County, Minnesota: Concord Township is a township in Dodge County, Minnesota, United States. The population was 587 at the 2000 census. The unincorporated community of Concord is located within Concord Township. The city of West Concord is located within the township geographically but is a separate entity.
Document 14: Beaver Township, Humboldt County, Iowa: Beaver Township is one of twelve townships in Humboldt County, Iowa, USA. As of the 2000 census, its population was 351. Beaver Township also contains the county seat of Humboldt County, Dakota City.
Document 15: Herman, Dodge County, Wisconsin: Herman is a town in Dodge County, Wisconsin, United States. The population was 1,207 at the 2000 census. The unincorporated communities of Herman Center and Huilsburg are located in the town. The unincorporated community of Hochheim is also located partially in the town.
ground_truth: Dodge County
sub_queries: Black Hawk Township >> located in the administrative territorial entity Answer: Jefferson County
Jefferson County >> shares border with Answer: Dodge County