Question: What county is bordered by another county, where Murphy Lake can be found?

full_context: Document 1: 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 2: Murphy Island (Pennsylvania): Murphy Island (also known as Donley Island) is a privately owned alluvial island in the Allegheny River in Gilpin Township, Armstrong County in the U.S. state of Pennsylvania. The island is situated across from South Buffalo Township.
Document 3: Richfield, Washington County, Wisconsin: Richfield is a village in Washington County, Wisconsin, United States. The population was 11,300 at the 2010 census. The unincorporated communities of Colgate and Hubertus are located partially in Richfield.
Document 4: Murphy, North Carolina: Murphy is a town in and the county seat of Cherokee County, North Carolina, United States. It is situated at the confluence of the Hiwassee and Valley rivers. It is the westernmost county seat in the state of North Carolina, approximately from the state capital in Raleigh. The population of Murphy was 1,627 at the 2010 census.
Document 5: Colgate, Wisconsin: Colgate is an unincorporated community in Washington County, Wisconsin, United States, straddling the county line with Waukesha County. Colgate is located partially in the village of Richfield, and the town of Lisbon. Its ZIP code is 53017.
Document 6: Murphy Lake (Marinette County, Wisconsin): Murphy Lake is a lake in Marinette County, Wisconsin. Murphy Lake lies at an elevation of 718 feet (225 m). The lake contains panfish, largemouth bass, northern pike, and trout. It has a public boat access ramp.
Document 7: Washington County, Wisconsin: According to the U.S. Census Bureau, the county has a total area of 436 square miles (1,130 km2), of which 431 square miles (1,120 km2) is land and 5.0 square miles (13 km2) (1.2%) is water. It is the fifth-smallest county in Wisconsin by total area.
Document 8: Lake, Price County, Wisconsin: Lake is a town in Price County, Wisconsin, United States. The population was 1,319 at the 2000 census. The unincorporated community of Kennedy is located in the town. The ghost town of Kaiser was also located in the town.
Document 9: Murphy Lake (Kaufman County, Texas): Murphy Lake is a reservoir in Kaufman County, Texas, United States. Murphy Lake lies at an elevation of 374 feet (114 m).
Document 10: Wayne, Washington County, Wisconsin: Wayne is a town in Washington County, Wisconsin, United States. The population was 1,727 at the 2000 census. The unincorporated communities of Kohlsville and Wayne are located in the town.
Document 11: Polk, Wisconsin: Polk is a town in Washington County, Wisconsin, United States. The population was 3,938 at the 2000 census. The unincorporated communities of Ackerville, Cedar Creek, Cedar Lake, Diefenbach Corners, Mayfield, and Rugby Junction are located in the town. The town derives its name from James K. Polk, 11th U.S. President, who was in office when Wisconsin attained statehood in 1848.
Document 12: Westford, Richland County, Wisconsin: Westford is a town in Richland County, Wisconsin, United States. The population was 594 at the 2000 census. The unincorporated communities of Bunker Hill and Germantown are located in the town. The unincorporated community of Corwin was also located in the town.
Document 13: Plat, Wisconsin: Plat was an unincorporated community and is now a neighborhood in the village of Richfield, Washington County, Wisconsin, United States. It is located at the intersection of Plat Road and Monches Road. It is 2 miles from the towns of Erin and Merton and from County Trunk Highway Q (County Line Road) and the Waukesha County and Washington County division.
Document 14: Murphy Lake (Grand County, Colorado): Murphy Lake is a lake in Grand County, Colorado, United States. Murphy Lake lies at an elevation of 11,224 feet (3,421 m).
Document 15: Murphy Lake (Washington County, Wisconsin): Murphy Lake is a lake in Washington County, Wisconsin, United States. Murphy Lake lies at an elevation of 974 feet (297 m).
ground_truth: Waukesha County
sub_queries: Murphy Lake >> located in the administrative territorial entity Answer: Washington County
Washington County >> shares border with Answer: Waukesha County