Question: What is the population of the town which was part of the International Railway of Maine at the 2010 census?

Context paragraphs:
Wayne, Maine: Wayne is a town in Kennebec County, Maine, United States.  The population was 1,189 at the 2010 census.  The town was named after Revolutionary War General Anthony Wayne.  During the summer, Wayne is home to Camp Androscoggin.  A popular recreation spot in central Maine, Wayne is part of the Winthrop Lakes Region.  The town is included in the Augusta, Maine micropolitan New England City and Town Area.

International Railway of Maine: The International Railway of Maine was a historic railroad constructed by the Canadian Pacific Railway (CPR) between Lac-Mégantic, Quebec and Mattawamkeag, Maine, closing a key gap in the railway's transcontinental main line to the port of Saint John, New Brunswick.

Readfield, Maine: Readfield (/ˈɹid fild/) is a town in Kennebec County, Maine, United States.  The population was 2,598 at the 2010 census.  Readfield is home to the Kents Hill School, a preparatory school, Maranacook Community Schools, public schools for the district, a few summer camps, and the annual Readfield Heritage Days.  A popular recreation spot in central Maine, the town contains nine lakes and ponds, including Maranacook Lake, and is part of the Winthrop Lakes Region.  The town of Readfield was previously named Pond Town.  Readfield is included in the Augusta, Maine micropolitan New England City and Town Area.

Mirny, Arkhangelsk Oblast: Mirny (Russian: Мирный ; ] , lit.  "peaceful") is a closed town in the west of Arkhangelsk Oblast, Russia, serving the Plesetsk Cosmodrome.  The town is located 9 km from the urban-type settlement of Plesetsk and is connected to it by a road and a railway.  Gorodskaya railway station is located within the town, being a terminus to cosmodrome's vast railway system.  The Plestsy Airport is also located nearby.  Population:  (2010 Census) ;  (2002 Census)

Laredo–Nuevo Laredo: The Laredo–Nuevo Laredo Metropolitan Area (UN/LOCODE: USLRD & MXNLD) is one of six bi-national metropolitan areas along the United States-Mexican border.  The city of Laredo is situated in the American state of Texas on the northern bank of the Rio Grande and Nuevo Laredo is located in the Mexican State of Tamaulipas in the southern bank of the river.  This metropolitan area is also known as the Two Laredos or the Laredo Borderplex.  The metropolitan area is made up of one county: Webb County in Texas and three municipalities: Nuevo Laredo Municipality in Tamaulipas, Hidalgo Municipality in Coahuila, Anáhuac Municipality in Nuevo León in Mexico.  Two urban areas: the Laredo Metropolitan Statistical Area and the Zona Metropolitana Nuevo Laredo (Nuevo Laredo Metropolitan Zone) three cities and 12 towns make the Laredo–Nuevo Laredo Metropolitan area which has a total of 636,516 inhabitants according to the INEGI Census of 2010 and the United States Census estimate of 2010.  The Laredo–Nuevo Laredo is connected by four International Bridges and an International Railway Bridge.  According to World Gazetteer this metropolitan area ranked 157th largest in North and South America in 2010 with an estimated population of 775,481.  This area ranks 66th in the United States and 23rd in Mexico.

Manchester, Maine: Manchester is a town in Kennebec County, Maine, United States, located at .  The population was 2,580 at the 2010 census.  The southern part of the town bordering Cobbosseecontee Lake is a popular recreation spot in central Maine, and part of the Winthrop Lakes Region.  Manchester is included in the Augusta, Maine micropolitan New England City and Town Area.

Minot, Maine: Minot is a town in Androscoggin County, Maine, United States.  The population was 2,607 at the 2010 census.  The town includes the villages of West Minot and Minot Center.  It is part of both the Lewiston-Auburn, Maine metropolitan statistical area and the Lewiston-Auburn, Maine metropolitan New England city and town area.

Mattawamkeag, Maine: Mattawamkeag is a town in Penobscot County, Maine, United States, located where the Mattawamkeag River joins the Penobscot River.  The population was 687 at the 2010 census.

Sullivan, Maine: Sullivan is a town in Hancock County, Maine, United States.  The population was 1,236 at the 2010 census.  The town was named for Daniel Sullivan, an early settler.  Colloquially referred to as "Sully" or "the Sullivans" – like many Maine municipalities composed of villages with geographic designations of the town proper – the municipality was incorporated in 1789.  Located in the Upper Schoodic Peninsula sub-region of Maine's Downeast Acadia region, the Municipality has had several incarnations as Waukeag, New Bristol, and later Sullivan; and once included nearby communities of Hancock, Sorrento, and what would later be (parts of Gouldsboro Point TWP, Tunk Lake TWP, the Schoodic Foothills, Hog Bay, and various other districts over time divided off) Township 7, South & Middle Districts.  Once home to abundant granite quarries, the Town of Sullivan is now regarded as a residential community for nearby Ellsworth and Mount Desert Island, Maine.  Located along US Rte 1, Taunton River, and Hog Bay, Sullivan is home to a slough of reversing tidal falls and many scenic turnouts that dot the Schoodic National Scenic Byway along the Upper Schoodic Peninsula.

Frye Island, Maine: Frye Island is a town in Cumberland County, Maine, United States.  Located in Sebago Lake, the island is accessed via a public car ferry from Raymond Neck, or by private boat.  All residents of the resort town are seasonal.  The majority of property owners hail from New England area states (Maine, Massachusetts, Connecticut, Rhode Island and New Hampshire) however there are many other states also represented on the island.  Frye Island is vacant from November through April, and the ferry does not operate during that time due to the formation of thick ice during cold winter months.  It is part of the Portland–South Portland–Biddeford, Maine Metropolitan Statistical Area.  The town had a population of five at the 2010 census.

Supporting paragraphs: International Railway of Maine Mattawamkeag, Maine
Answer: 687