Question: What county is White Sulphur Springs, Montana located in?

Context paragraphs:
Ringling, Montana: Ringling is a small unincorporated community in southern Meagher County, Montana, United States, along the route of U.S. Route 89.  The town was a station stop on the transcontinental main line of the Chicago, Milwaukee, St. Paul and Pacific Railroad ("the Milwaukee Road"); it was also the southern terminus of the White Sulphur Springs and Yellowstone Park Railway, which ran from Ringling to White Sulphur Springs.  Ringling served as a community center for ranchers and homesteaders in the vicinity, but the town's population declined throughout most of the twentieth century as the region's agricultural activity dwindled.  Both railroad lines through Ringling were abandoned in 1980, and only a handful of people remain in the town today.

Byron R. Sherman House: The Byron R. Sherman House, also known as The Castle or The Castle of White Sulphur Springs, is a site on the National Register of Historic Places located in White Sulphur Springs, Montana, United States.  It was added to the Register on September 15, 1977.  The property includes a carriage house.

White Sulphur Springs, North Carolina: White Sulphur Springs (sometimes seen as just Sulphur Springs) is a small unincorporated community in Surry County, North Carolina on the outskirts of the city of Mount Airy near the Virginia state line.  The community sits on the Ararat River and once served as a popular late-nineteenth century resort .  The community's name comes from the White Sulphur Springs Hotel that once stood here.

Emmanuel Taylor Gordon: Emmanuel Taylor Gordon (April 29, 1893 – May 5, 1971) was a singer and vaudeville performer associated with the Harlem Renaissance in the mid-1920s.  He was born in White Sulphur Springs, Montana and moved to New York City at the age of 17.  His career faded after the 1920s, and in 1959 he retired to White Sulphur Springs, where he died in 1971.  In addition to his singing career, Gordon is remembered today for his 1929 autobiography, "Born to Be," which recounts his youth as an Afro-American in small-town Montana, and his experiences in 1920s Harlem.

Montgomery White Sulphur Springs Cottage: Montgomery White Sulphur Springs Cottage, also known as Haley House, was a historic home located at Christiansburg, Montgomery County, Virginia.  It was a one-story, four bay, frame dwelling with a standing seam metal hipped roof and central chimney.  It was one of three surviving structures from the Montgomery White Sulphur Springs resort.  When the resort closed in 1904, the cottage was moved to Christiansburg.  It was demolished in 1995-1996.

Camp White Sulphur Springs Confederate Cemetery: The Camp White Sulphur Springs Confederate Cemetery is an American Civil War cemetery in Arkansas.  It is located northeast of the village of Sulphur Springs, also known as White Sulphur Springs, in Jefferson County.

White Sulphur Springs Open: The White Sulphur Springs Open was a PGA Tour event that was played on the Old White Course of the Greenbrier Hotel in White Sulphur Springs, West Virginia during the 1920s and 1930s.  The hotel is now a 721-room resort called The Greenbrier.  The Old White Course opened in 1914 and is named after the Old White Hotel, which stood on the grounds from 1858 to 1922.

Jewish Community Center of White Sulphur Springs: Jewish Community Center of White Sulphur Springs, also known as White Sulpher Springs Synagogue, is a historic synagogue located at White Sulphur Springs in Sullivan County, New York.  It was built in 1934 and is a rectangular, 1-story building built into a hillside.  It is a three-by-five-bay frame structure clad in asbestos-cement tiles.  The front facade features a stepped, pedimented parapet that extends beyond the roofline.

Castle Mountains (Montana): The Castle Mountains, highest point Elk Peak, el.  8589 ft , are an island range east of White Sulphur Springs in Meagher County, Montana, United States.  About 30,000 acres of the Castles were roadless as of 1995.  The western portion of the Castles are moist, while the eastside is dry, porous limestone hills.  The range gets its name from "castle turrets", 50-foot high igneous rock spires on the western slopes.  The range was the focus of mining activity in the previous century; crumbling remains of old miners' cabins and diggings are present throughout the area.  The landscape is characterized by a central cluster of peaks over 8,000 feet and extensive grassy parks surrounded by lodgepole pine and limber pine.  The Castles are lightly used by recreationists except for hunters in the fall.  On the peak of Castle Mountain itself is a login book for the few who reach the top.  There is no trail that leads to the peak.

White Sulphur Springs, Montana: White Sulphur Springs is a city in and the county seat of Meagher County, Montana, United States.  The population was 939 at the 2010 census.

Supporting paragraphs: Castle Mountains (Montana) White Sulphur Springs, Montana
Answer: Meagher County