Question: What island is home to the Southwest Harbor Public Library?

Context paragraphs:
Columbia Public Library: The Columbia Public Library is the public library for the city of Columbia, Missouri.  It is the headquarters of the Daniel Boone Regional Library system, which also includes Callaway County Public Library, Southern Boone County Library, and two Bookmobiles.  Columbia Public Library is the largest library in the system.  The library was established in 1959 on Broadway street just west of downtown.  The library was demolished and reconstructed at this same location in 2002.  In 2001 it had a circulation of 1,171,641 (82% of the DBRL system).  In 2009 Columbia Public Library had 734,719 visitors while the DBRL system had a circulation of 2,110,378.

Tampa–Hillsborough County Public Library System: The Tampa–Hillsborough County Public Library System (THPL) is a public library system based in Hillsborough County, Florida.  The State Library of Florida is the main library source for Government of Florida as well as governs a large portion of Florida's public and private libraries.  THPL is part of two larger library networks, the Hillsborough County Public Library Cooperative and the Tampa Bay Library Consortium, which also includes Temple Terrace Public Library in Temple Terrace, Florida, and Bruton Memorial Library in Plant City, Florida.  There are 25 branches of the Tampa–Hillsborough County Library System, not including digital-only and mobile-only services.  Services provided by the THPL include (but are in no way limited to) internet access, public meeting room spaces, interlibrary loans, a Bookmobile, a Cybermobile for Spanish speakers, technology classes, adult literacy programs, and downloadable eBooks.  Drive-thru windows for returns and hold pick-ups are located at the Jimmie B. Keel and the Jan Kaminis Platt Regional Libraries.  The Tampa–Hillsborough County Public Library System is also a part of Hillsborough County government.

Southwest Harbor, Maine: Southwest Harbor is a town in Hancock County, Maine, United States.  Located on Mount Desert Island, the population was 1,764 at the 2010 census.

Chicopee Public Library: The Chicopee Public Library is the public library for the city of Chicopee, Massachusetts.  A member of the Western Massachusetts Regional Library System, the Chicopee Public Library participates in resources sharing and collaboration with all other libraries in the WRMLS system.  The Chicopee Public Library owns approximately 109,000 books according to the 2005 IMLS Public Library Report.  Additionally they have 4,200 media items and send and receive over 35,000 interlibrary loan requests.  In fiscal year 2008, the city of Chicopee spent 1.1% ($1,401,141) of its budget on its public library—some $25 per person.

Boston Public Library: The Boston Public Library is a municipal public library system in Boston, Massachusetts, United States, founded in 1848.  The Boston Public Library is also the Library for the Commonwealth (formerly "library of last recourse") of the Commonwealth of Massachusetts; all adult residents of the commonwealth are entitled to borrowing and research privileges, and the library receives state funding.  The Boston Public Library contains approximately 23 million items encompassing all formats including books, DVDs, CDs, maps, music scores, microfilm, manuscripts, prints and other visual materials, and electronic resources, making it the third-largest public library in the United States behind only the Library of Congress (with 160 million items) and the New York Public Library (with 53 million items), according to the American Library Association.  In fiscal year 2014, the library held over 10,000 programs, all free to the public, and lent 3.7 million materials.

Indiana Harbor Public Library: Indiana Harbor Public Library, also known as Grand Boulevard Carnegie Library, is a historic Carnegie library located at 3605 Grand Avenue in East Chicago, Lake County, Indiana.  It was built in 1913, and is a one-story, Arts and Crafts style brick building on a raised basement.  An addition was constructed in 1931.  The building has a clay tile hipped roof and an entry porch supported by square brick columns.  The building was constructed with a $20,000 grant from the Carnegie Foundation.  The building serves as the home of the East Chicago Academy of Visual and Performing Arts.

Southwest Harbor Public Library: The Southwest Harbor Public Library is the public library serving Southwest Harbor, Maine.

Benton Harbor Public Library: The Benton Harbor Public Library (BHPL) is a public library located in Benton Harbor, Michigan.  The BHPL service area consists of the City of Benton Harbor and Benton Charter Township, Michigan.

Brooklyn Public Library: The Brooklyn Public Library (BPL) is the public library system of the borough of Brooklyn, in New York City.  It is the fifth largest public library system in the United States.  Like the two other public library systems in New York City, it is an independent nonprofit organization that is funded by the New York City and State governments, the federal government, and private donors.  In Fiscal Year 2009, Brooklyn Public Library had the highest program attendance of any public library system in the United States.  The library currently promotes itself as Bklyn Public Library.

New York Public Library: The New York Public Library (NYPL) is a public library system in New York City.  With nearly 53 million items, the New York Public Library is the second largest public library in the United States (behind the Library of Congress), and fourth largest in the world.  It is a private, non-governmental, independently managed, nonprofit corporation operating with both private and public financing.  The library has branches in the boroughs of Manhattan, The Bronx, and Staten Island, and affiliations with academic and professional libraries in the metropolitan area of New York State.  The City of New York's other two boroughs, Brooklyn and Queens, are served by the Brooklyn Public Library and the Queens Library, respectively.  The branch libraries are open to the general public and consist of circulating libraries.  The New York Public Library also has four research libraries which are also open to the general public.

Supporting paragraphs: Southwest Harbor Public Library Southwest Harbor, Maine
Answer: Mount Desert Island