Question: The Mortimer Webster House is a historic house in Stillwater, a city in Washington County, Minnesota across the St. Croix River from the state of Wisconsin, in which country?
Sentence (from "Saint Croix National Scenic Riverway"): The largest scenic riverway east of the Mississippi River, it lies within parts of eight counties in Wisconsin: Bayfield, Burnett, Douglas, Pierce, Polk, St. Croix, Sawyer, and Washburn; and three in Minnesota: Chisago, Pine, and Washington.
Relevant evidence: No