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

full_context: Document 1: Harriet Beecher Stowe House (Brunswick, Maine): The Harriet Beecher Stowe House is a historic home and National Historic Landmark at 63 Federal Street in Brunswick, Maine, notable as a short-term home of Harriet Beecher Stowe and Calvin Ellis Stowe. Earlier, it had been the home of Henry Wadsworth Longfellow as a student. It is today owned by Bowdoin College. A space within the house, called Harriet's Writing Room, is open to the public.
Document 2: Chebeague Island, Maine: Chebeague Island is an island town in Cumberland County, Maine, United States, located in Casco Bay, 10 mi from Portland. These islands are sometimes referred to as an older, now archaic term "The Calendar Islands" because there was once a belief that the approximate number of islands was 365. The actual number is fewer than two hundred. Great Chebeague was a part of the town of Cumberland until July 1, 2007, when it became the town of Chebeague Island. As of the 2010 census, the town had a population of 341.
Document 3: Salmon Falls River: The Salmon Falls River is a tributary of the Piscataqua River in the U.S. states of Maine and New Hampshire. It rises at Great East Lake, Newichawannock Canal, and Horn Pond and flows south-southeast for approximately 38 mi , forming the border between York County, Maine, and Strafford County, New Hampshire.
Document 4: Capt. Henry E. Sewall House: The Capt. Henry E. Sewall House is an historic wooden house now located in Indian RiverSide Park in Jensen Beach, in Martin County, Florida. Local pioneer and developer Capt. Henry E. Sewall built it in 1889 at the southern tip of Sewall's Point, the peninsula and town which bear his family name. When Capt. Sewall became the postmaster of Sewall's Point, the house served also as the Sewall's Point post office. Next to the house Capt. Sewall also built a freight dock that extended into the St. Lucie River along with a storage building at its end.
Document 5: Island Falls, Maine: 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.
Document 6: Isabella Breckinridge House: The Isabella Breckinridge House also known as River House, and formerly the Breckinridge Public Affairs Center of Bowdoin College, is an historic house at 201 US Route 1 in York, Maine, United States. The main house, designed by architect Guy Lowell, is a 23-room mansion which was built in 1905 for Mary Goodrich, widow of tire magnate B. F. Goodrich. It is located on a 26 acre estate facing the York River. The property was given to Bowdoin College by Mary Marvin Breckinridge Patterson in 1974, and the college operated it as a conference center until it was sold into private hands in 2004. The house was added to the National Register of Historic Places in 1983. It is one of Maine's most architecturally distinctive and unusual early 20th-century summer estate houses.
Document 7: Islesboro, Maine: Islesboro is a town in Waldo County, Maine, United States. The population was 566 at the 2010 census. It has a summer colony accessible by ferry from Lincolnville Beach 3 miles to the west, or by air taxi service. Home to Warren Island State Park, Islesboro includes the villages of Dark Harbor, Pripet and North Islesboro otherwise known as Guinea.
Document 8: Odd Fellows' Hall (Beverly, Massachusetts): The Odd Fellows' Hall in Beverly, Massachusetts occupies a prominent location on Cabot Street opposite city hall in Beverly Center. It is a 3.5 story High Gothic Revival building constructed in 1893 to a design by local architect J. Foster Ober. Its exterior is clad in brick with trim of granite and brownstone. Its roof is a cross gable style, steep roof with polychrome bands of slate tiles. The central portion of the roof is a deck surrounded by a wrought iron railing and is topped by a cupola and weathervane. One of its notable tenants was President William Howard Taft, who had offices in the building during summer residencies in Beverly.
Document 9: Little Falls, Maine: Little Falls is a census-designated place (CDP) in the town of Gorham in Cumberland County, Maine, United States. The population of the CDP was 708 at the 2010 census. Prior to 2010, Little Falls was part of the Little Falls-South Windham census-designated place.
Document 10: Wadsworth Hall: Wadsworth Hall, also known as the Peleg Wadsworth House, is a historic house at the end of Douglas Road in Hiram, Maine, United States. A massive structure for a rural setting, it was built for General Peleg Wadsworth between 1800 and 1807 on a large tract of land granted to him for his service in the American Revolutionary War. Wadsworth was the leading citizen of Hiram, and important town meetings took place at the house. He was also the grandfather of poet Henry Wadsworth Longfellow, who visited the estate as a youth. The house remains in the hands of Wadsworth descendants. The house was listed on the National Register of Historic Places in 1974.
Document 11: Isle au Haut, Maine: Isle au Haut ( ) is a town in Knox County, Maine, United States, on an island of the same name in Penobscot Bay. The population was 73 at the 2010 census. Home to portions of Acadia National Park, Isle au Haut is accessible by ferry from Stonington, Maine.
Document 12: Harpswell, Maine: Harpswell is a town in Cumberland County, Maine, United States, within Casco Bay in the Gulf of Maine. The population was 4,740 at the 2010 census. Harpswell is composed of land contiguous with the rest of Cumberland County, called Harpswell Neck, as well as three large islands connected by bridges: Sebascodegan Island (locally known as Great Island), Orr's Island, and Bailey Island and over 200 smaller islands. Harpswell is part of the Portland–South Portland–Biddeford, Maine Metropolitan Statistical Area.
Document 13: William Sewall House: 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.
Document 14: William F. Grant House: The William F. Grant House is a historic house at 869 Main Street in North Vassalboro, Maine. Built in 1850 by a Scottish immigrant, it is a distinctive local example of Gothic Revival architecture. It was listed on the National Register of Historic Places in 2006.
Document 15: John Ellis Roosevelt Estate: John Ellis Roosevelt Estate, also known as Meadow Croft, is a historic estate located at Sayville in Suffolk County, New York. The main house, roughly L-shaped, is composed of two distinct parts: the original farmhouse, built about 1850, and now the rear of the house; and the larger, more formal Colonial Revival mansion built 1891-1892 and set perpendicular to it. The original section is a two-story, rectangular farmhouse, sheathed in clapboard and surmounted by a gable roof. The 1891–92 section is a clapboarded, two-story structure with an elaborate facade with generous porch and surmounted by a steeply pitched, truncated hipped roof. Also on the property are contributing carriage house, equipment barn, garage, caretaker's cottage, swimming pool, storage hut, and archaeological sites. The property was purchased by Robert Barnwell Roosevelt (1829–1906) in 1873; his son John Ellis Roosevelt (1853–1939) commissioned the estate.
ground_truth: Aroostook County, Maine, United States