Question: What county is the William Sewall House located in?

Related documents: [0]  [DOC] The William Sewall House is a historic house at 1027 Crystal Road in Island Falls, Maine. Built in 1865, it is a well-preserved example of vernacular Greek Revival style in a rural setting. The house is notable as the longtime home of a second-generation resident of the community, William Wingate Sewall, who had a long and enduring friendship with Theodore Roosevelt, a regular guest until 1878. The house was listed on the National Register of Historic Places in 1982. It is still in the hands of Sewall descendants, operated as a yoga retreat center. [END] 
[1]  [DOC] Island Falls is a town in Aroostook County, Maine, United States. The population was 837 at the 2010 census. Island Falls took its name from an island in the stream at the verge of a waterfall. [END]  
Answer: Aroostook County, Maine, United States
Aroostook County, Maine, United States