Question: The Bass Harbor Memorial Library, located in Tremont Maine, on which island?
Context: Bass Harbor Head Lighthouse is a lighthouse located within Acadia National Park in the southwest portion of Mount Desert Island, Maine, marking the entrance to Bass Harbor and Blue Hill Bay. The Jay-Niles Memorial Library or Niles Memorial Library is the public library of Jay, Maine.  It is located on Maine State Route 4, in an architecturally distinguished Colonial Revival building built in 1916-18 as a memorial to Veranus and Mehitable Niles, and the town's Civil War soldiers.  The building was added to the National Register of Historic Places in 1987. Tremont is a town in Hancock County, Maine, United States.  It is located on the southwestern side of Mount Desert Island, known to locals as "the backside." Bass Harbor (also McKinley) is a village in Hancock County, Maine, United States.  It is within the town of Tremont on Mount Desert Island, and near Acadia National Park.  With its well-protected natural harbor, it ranks as one of the most lucrative lobster-producing ports in the state.  Bass Harbor Head Lighthouse lies at the mouth of the harbor.  The village is terminal for both the Swans Island ferry and Frenchboro ferry. The Moore-Mayo House is a historic house on Lighthouse Road in Bass Harbor, a village of Tremont, Maine.  The architecturally vernacular house was built beginning in 1947 by the authors Ruth Moore and Eleanor Mayo, who lived and wrote there until their respective deaths in 1989 and 1981.  Moore in particular has been cited as a major mid-20th century writer of Maine culture.  The house was listed on the National Register of Historic Places in 2004. Boothbay Harbor Memorial Library is the public library of Boothbay Harbor, Lincoln County, Maine.  It is located at 4 Oak Street, in an architecturally significant Greek Revival building constructed as a private residence in 1842.  The building was listed on the National Register of Historic Places in 1977.  The building also serves as a war memorial to the town's soldiers of the First World War. The B.S. Ricks Memorial Library is a historic library in Yazoo City, Mississippi.  It was added to the National Register of Historic Places on September 18, 1975.  It is located at 310 North Main Street.  The library was founded in 1838 as a membership library.  In 1900 Fannie Ricks helped fund construction of the B. S. Ricks Memorial Library building, named after her late husband General B.S. Ricks.  It opened in 1901 and had its formal dedication on January 1, 1902.  It remains in use. The National McKinley Birthplace Memorial Library and Museum is the national memorial to President William McKinley located in Niles, Ohio.  Also known as the McKinley Memorial Library, Museum & Birthplace Home, the Memorial is a 232 foot by 136 foot by 38 foot marble monument with two wings.  One houses the McKinley Memorial Library, which is a public library.  The second wing features the McKinley Museum, with exhibits about President McKinley, and an auditorium. The Bass Harbor Memorial Library is the public library of Tremont, Maine.  It is located at 89 Bernard Road in the village of Bernard, in an historically significant Colonial Revival building built in 1922 with funds donated by Tremont native Rhoda M. Watson.  The building was listed on the National Register of Historic Places in 2009. The Pearl Harbor Memorial Bridge, more commonly referred to as the Q Bridge by locals, is an extradosed bridge that carries Interstate 95 (Connecticut Turnpike) over the mouth of the Quinnipiac River in New Haven, in the U.S. state of Connecticut.  The original 1,300 m (0.8 mi) span – which opened on January 2, 1958 – was a girder and floorbeam design where steel beams support the concrete bridge deck.  The bridge carried three lanes of traffic in each direction with no inside or outside shoulders.  The bridge was officially dedicated as the Pearl Harbor Memorial Bridge in 1995 to commemorate the attack on Pearl Harbor.
Answer: Mount Desert Island