Question: what is the population of williston in the state containing Morton County?

full_context: Document 1: Montana: Montana has a larger Native American population numerically and percentage-wise than most U.S. states. Although the state ranked 45th in population (according to the 2010 U.S. Census), it ranked 19th in total native people population. Native people constituted 6.5 percent of the state's total population, the sixth highest percentage of all 50 states. Montana has three counties in which Native Americans are a majority: Big Horn, Glacier, and Roosevelt. Other counties with large Native American populations include Blaine, Cascade, Hill, Missoula, and Yellowstone counties. The state's Native American population grew by 27.9 percent between 1980 and 1990 (at a time when Montana's entire population rose just 1.6 percent), and by 18.5 percent between 2000 and 2010. As of 2009, almost two-thirds of Native Americans in the state live in urban areas. Of Montana's 20 largest cities, Polson (15.7 percent), Havre (13.0 percent), Great Falls (5.0 percent), Billings (4.4 percent), and Anaconda (3.1 percent) had the greatest percentage of Native American residents in 2010. Billings (4,619), Great Falls (2,942), Missoula (1,838), Havre (1,210), and Polson (706) have the most Native Americans living there. The state's seven reservations include more than twelve distinct Native American ethnolinguistic groups.
Document 2: Wilton, North Dakota: Wilton is a city in Burleigh and McLean counties in the State of North Dakota. It is part of the "Bismarck, ND Metropolitan Statistical Area" or "Bismarck-Mandan". The population was 711 at the 2010 census. Founded in 1899, Wilton was named by General W. D. Washburn after the town of Wilton in his native state of Maine.
Document 3: Fort Rice: The State Historical Society of North Dakota protects the fort area as Fort Rice State Historic Site, located about 30 miles south of Mandan, North Dakota in Morton County. Visitors can see depressions, foundation lines, and WPA corner markers for the original buildings.
Document 4: Fort Berthold: Fort Berthold was two sequential forts on the Missouri River in North Dakota, both of which began as fur trading posts. The second became a post for the U.S. Army and later became the Indian Agency for the Arikara, Hidatsa, and Mandan tribes. The sites are both now under Lake Sakakawea.
Document 5: Sims, North Dakota: Sims is a ghost town in Morton County, North Dakota, United States. The town was founded in 1883, and Sims Scandinavian Lutheran Church was constructed the following year. Today, the church has been restored and still worships every other Sunday. The church parsonage has also been restored and is home to the Sims Historical Society Museum.
Document 6: Dallas: Dallas (/ ˈdæləs /) is a city in the U.S. state of Texas. It is the most populous city in the Dallas -- Fort Worth metroplex, which is the fourth most populous metropolitan area in the United States. The city's population ranks ninth in the U.S. and third in Texas after Houston and San Antonio. The city's prominence arose from its historical importance as a center for the oil and cotton industries, and its position along numerous railroad lines. The bulk of the city is in Dallas County, of which it is the county seat; however, sections of the city are located in Collin, Denton, Kaufman, and Rockwall counties. According to the 2010 United States Census, the city had a population of 1,197,816. The United States Census Bureau's estimate for the city's population increased to 1,317,929 as of July 1, 2016.
Document 7: Montana: The United States Census Bureau estimates that the population of Montana was 1,032,949 on July 1, 2015, a 4.40% increase since the 2010 United States Census. The 2010 census put Montana's population at 989,415 which is an increase of 43,534 people, or 4.40 percent, since 2010. During the first decade of the new century, growth was mainly concentrated in Montana's seven largest counties, with the highest percentage growth in Gallatin County, which saw a 32 percent increase in its population from 2000-2010. The city seeing the largest percentage growth was Kalispell with 40.1 percent, and the city with the largest increase in actual residents was Billings with an increase in population of 14,323 from 2000-2010.
Document 8: Fargo, North Dakota: Fargo is the most populous city in the state of North Dakota, accounting for over 15% of the state population. Fargo is also the county seat of Cass County. According to the 2016 United States Census estimates, its population was 120,762, making it the 229th-most populous city in the United States. Fargo, along with its twin city of Moorhead, Minnesota, as well as the adjacent cities of West Fargo, North Dakota and Dilworth, Minnesota, form the core of the Fargo - Moorhead, ND - MN Metropolitan Statistical Area, which in 2016 contained a population of 238,124. In 2014, Forbes magazine ranked Fargo as the fourth fastest - growing small city in the United States.
Document 9: Zahl, North Dakota: Zahl is an unincorporated community in northwestern Williams County, North Dakota, United States. It lies along North Dakota Highway 50 north of the city of Williston, the county seat of Williams County. Its elevation is 2,014 feet (614 m). Although it is unincorporated, it has a post office, with the ZIP code of 58856.
Document 10: Three Rivers Petroglyph Site: There are over 21,000 petroglyphs at the Three Rivers Petroglyph Site at Three Rivers, New Mexico, located midway between Tularosa and Carrizozo in Otero County on Highway 54. Many of the petroglyphs can be easily viewed from a trail open to the public which winds through the rocks for about one mile. The petroglyphs are thought to be the product of the Jornada Mogollon people between about 1000 and 1400 AD. The site is protected and maintained by the Bureau of Land Management.
Document 11: Williston, Florida: Williston is a city in Levy County, Florida, United States. As of the 2010 census it had a population of 2,768. The city was established before 1885 by J. M. Willis, who named it after himself.
Document 12: Crow Flies High State Recreation Area: Crow Flies High State Recreation Area is a day-use state park in Mountrail County, North Dakota, west of the community of New Town. The site provides scenic views of Lake Sakakawea. Signs describe the location's role in local history, including its significance in the explorations of Lewis and Clark. The footprint of the drowned town of Sanish, now lost below the reservoir's waves, can be seen at times of low water.
Document 13: North Dakota: North Dakota is in the U.S. region known as the Great Plains. The state shares the Red River of the North with Minnesota to the east. South Dakota is to the south, Montana is to the west, and the Canadian provinces of Saskatchewan and Manitoba are to the north. North Dakota is situated near the middle of North America with a stone marker in Rugby, North Dakota marking the ``Geographic Center of the North American Continent ''. With an area of 70,762 square miles (183,273 km), North Dakota is the 19th largest state.
Document 14: Williston, North Dakota: Williston is a city in and the county seat of Williams County, North Dakota, United States. The 2010 census gave its population as 14,716, and the Census Bureau gave the 2015 estimated population as 26,977, making Williston the sixth largest city in North Dakota. The North Dakota oil boom is largely responsible for the sharp increase in population.
Document 15: Mitchell Site: The Mitchell Site, designated by the Smithsonian trinomial 39DV2, is an important archaeological site in Mitchell, Davison County, South Dakota. It was declared a National Historic Landmark in 1964. At that time it was the only reliably dated site of the Lower James River Phase (Initial Variant). The site, sheltered under a dome, is managed by a nonprofit organization and is open to the public as Mitchell Prehistoric Indian Village. Visitors can watch archaeologists uncover artifacts in the Thomsen Center Archeodome. The Boehnen Memorial Museum features a reconstructed lodge and many of the artifacts found at the site.
ground_truth: 26,977
sub_queries: Morton County >> located in the administrative territorial entity Answer: North Dakota
what is the population of williston North Dakota Answer: 26,977