Question: How many volumes were held by library serving the southernmost prefecture of Japan in 2016?

Context paragraphs:
Okinawa Prefectural Library: Okinawa Prefectural Library (沖縄県立図書館 , Okinawa Kenritsu Toshokan ) opened in Naha, Okinawa Prefecture, Japan in 1910.  Iha Fuyū was the first director.  The library reopened in a new building in 1983.  As of 2016, the collection numbers some 708,000 items, of which almost a fifth are on open access.

Oslo Public Library: Oslo Public Library (officially called in Norwegian "Deichmanske bibliotek", Deichman Library), is the municipal public library serving Oslo, Norway and is the country's first and largest library.  It employs over 300 people and has over 20 branches throughout the city.  Registered users may use the library every day, even when it is not staffed, from 7am to 11pm.  It is also possible to borrow and return books when the library is not staffed.  One of the most prized books in the library's collection is the Vulgate bible of Aslak Bolt (1430–1450), Norway's only preserved liturgical handwritten manuscript from medieval times.  The book itself is estimated to have been written around 1250.  The head of the library from 2014 to 2016 was Kristin Danielsen.

Naha: Naha (那覇市 , Naha-shi , ]) is the capital city of Okinawa Prefecture, the southernmost prefecture of Japan.

Sewickley Public Library: The Sewickley Public Library is the public library serving the Quaker Valley School District.  The library can be found in Sewickley, Pennsylvania, a borough that is located 12 mi west northwest of Pittsburgh along the Ohio River.  A community and cultural resource since 1873, the Sewickley Public Library was established to provide free service to residents of the Quaker Valley School District, Allegheny County residents, and qualified non-residents.  The Library offers a variety of materials and services.  Owning over 90,000 titles – housing an ever-growing collection of fiction and non-fiction books, DVDs, music CDs, audio books, and magazines – the Library also has access to the materials of all other participating Allegheny County Library Association libraries.

UAA/APU Consortium Library: The UAA/APU Consortium Library is a joint library serving the University of Alaska Anchorage and Alaska Pacific University, established in 1973.  The library has approximately 930,000 volumes on site and average weekly visits to the building during the fall and spring semesters total approximately 12,000.  The library has the furthest north permanent Foucault pendulum in North America.

Nokomis Library: Nokomis Library, formerly Nokomis Community Library, is a branch library serving the Nokomis East area of Minneapolis, Minnesota.  One of 41 libraries in the Hennepin County Library System, Nokomis was designed by Buetow and Associates, Inc and opened in 1968 as a replacement for the nearby Longfellow Community Library.  After being deemed crowded and outdated in 1999, the library underwent a renovation beginning in 2009 that saw it gain a number of environmentally friendly features and an expansion of 4300 sqft .  The building reopened in 2011 and includes a restored "Wind and Water Chime", a stabile that was part of the original library and that was refurbished and reinstalled by July 2013.  The library contains over 35 computers, a public meeting room, and a Spanish-language collection of materials.

Okinawa Prefecture: Okinawa Prefecture (Japanese: 沖縄県 , Hepburn: Okinawa-ken , Okinawan: ウチナーチン "Uchinaa-chin") is the southernmost prefecture of Japan.  It comprises hundreds of the Ryukyu Islands in a chain over 1000 km long.  The Ryukyus extend southwest from Kyushu (the southwesternmost of Japan's four main islands) to Taiwan.  The Okinawa Prefecture encompasses the southern two thirds of that chain.  Naha, Okinawa's capital, is located in the southern part of Okinawa Island.

Sausalito Library: The Sausalito Library is a public library serving the City of Sausalito and environs in Marin County, California.  The library opened in 1974 at its present location of 420 Litho Street in Sausalito (inside City Hall).  The library collection consists of over 64,000 books, periodicals, CDs, DVDs, and audiobooks.  Services offered include programs for adults and children, Internet access, online databases, downloadable e-books and e-audiobooks, home delivery for seniors, museum passes, and assistance with downloading library ebooks onto personal devices.  The library is a member of the Marin Automated Resources and Information Network (MARINet), a consortium of publicly funded libraries in Marin County.  Abbot Chambers is the current City Librarian following Mary Richardson's retirement in July, 2011.  Richardson had been the City Librarian of the Sausalito Library since 1985.

Easton Area Public Library: The Easton Area Public Library is a public library system serving the community of Easton, Northampton County, Pennsylvania.  The present Carnegie library was predated by a community library constructed by the Easton Library Company in 1811.  With a grant in 1901 for $57,000 by industrialist Andrew Carnegie a new library began construction at 515 Church Street and was completed in 1903.  The library system consists of the Easton library serving as the headquarters, and the Palmer Branch located at 1 Weller Place, Palmer Township which was constructed in 1986.

Johnson County Public Library: The Johnson County Public Library is a public library serving the residents of Johnson County, Kentucky.  The library's collection contains 44,236 volumes, serves a population of 23,827, and circulates 120,687 items annually.  It is located at 444 Main Street in Paintsville, Kentucky and was established on February 3, 1947.  Although the library lacks branch locations, it does operate a daily mobile book service.

Supporting paragraphs: Okinawa Prefectural Library Naha
Answer: 708,000