Question: What country contains Walnut Corner in the county having Whitewater in the US state filming The Ernest Green Story?

full_context: Document 1: Whitewater Ski Resort: Whitewater Ski Resort is a ski resort located a 25-minute drive from Nelson in southern British Columbia, Canada. The resort is situated in Ymir bowl, beneath the high Ymir Mountain, in the Selkirk Mountains. The Selkirks receive plentiful, dry snow, and the location in a high alpine bowl provides an annual snowfall average of approximately . The elevation of the parking lot is and the highest lift accessed point is . While Ymir Peak is not included within the ski area boundary, lifts climb both shoulders of the bowl and provide easy traverse routes along ridges to the top. In addition to its snow, the resort is renowned for its tree skiing and steep runs; only 20% of the runs are beginner, while 40% are intermediate and the remaining 40% are advanced. Areas surrounding Whitewater, including West Arm Provincial Park, are renowned for easy access for backcountry split boarding and ski touring.
Document 2: Montana: Montana has 56 counties with the United States Census Bureau stating Montana's contains 364 "places", broken down into 129 incorporated places and 235 census-designated places. Incorporated places consist of 52 cities, 75 towns, and two consolidated city-counties. Montana has one city, Billings, with a population over 100,000; and two cities with populations over 50,000, Missoula and Great Falls. These three communities are considered the centers of Montana's three Metropolitan Statistical Areas.
Document 3: Stillwater River (Stillwater County, Montana): The Stillwater River is a tributary of the Yellowstone River. Approximately 70 miles (113 km) long, it runs through southern Montana in the United States.
Document 4: Wabash, Arkansas: Wabash is an unincorporated community in Phillips County, Arkansas, United States. Wabash is located on Arkansas Highway 44, south-southwest of Lake View. Wabash has a post office with ZIP code 72389.
Document 5: Whitewater, Montana: Whitewater is a census-designated place and unincorporated community in Phillips County, Montana, United States. Its population was 64 as of the 2010 census. Whitewater has a post office with ZIP code 59544.
Document 6: Little Rock Nine: The Little Rock Nine was a group of nine African American students enrolled in Little Rock Central High School in 1957. Their enrollment was followed by the Little Rock Crisis, in which the students were initially prevented from entering the racially segregated school by Orval Faubus, the Governor of Arkansas. They then attended after the intervention of President Dwight D. Eisenhower.
Document 7: 4 Little Girls: 4 Little Girls is a 1997 American historical documentary film about the 15 September 1963 case of four African-American girls (Addie May Collins, Carol Denise McNair, Cynthia Wesley, Carole Rosamond Robertson) in the 16th Street Baptist Church bombing in Birmingham, Alabama. It was directed by Spike Lee and nominated for an Academy Award for Best Documentary.
Document 8: Poplar Corner, Arkansas: Poplar Corner is an unincorporated community in Mississippi County, Arkansas, United States. Poplar Corner is located at the junction of Arkansas highways 77 and 119, north of Manila.
Document 9: The Ernest Green Story: The Ernest Green Story is a 1993 made-for-television movie which follows the true story of Ernest Green (Morris Chestnut) and eight other African-American high-school students (dubbed the "Little Rock Nine") as they embark on their historic journey to integrate Little Rock Central High School in Little Rock, Arkansas, in 1957. The film was developed and executive produced by Carol Ann Abrams. Much of the movie was filmed on location at Central High School.
Document 10: Walnut Corner, Phillips County, Arkansas: Walnut Corner is an unincorporated community in Phillips County, Arkansas, United States. Walnut Corner is located at the junction of U.S. Route 49, Arkansas Highway 1, and Arkansas Highway 85, south-southwest of Lexa.
Document 11: Dwight D. Eisenhower: In 1957, the state of Arkansas refused to honor a federal court order to integrate their public school system stemming from the Brown decision. Eisenhower demanded that Arkansas governor Orval Faubus obey the court order. When Faubus balked, the president placed the Arkansas National Guard under federal control and sent in the 101st Airborne Division. They escorted and protected nine black students' entry to Little Rock Central High School, an all-white public school, for the first time since the Reconstruction Era. Martin Luther King Jr. wrote to Eisenhower to thank him for his actions, writing "The overwhelming majority of southerners, Negro and white, stand firmly behind your resolute action to restore law and order in Little Rock".
Document 12: Four Corners, Contra Costa County, California: Four Corners is an unincorporated community in Contra Costa County, California, United States. It is located north-northeast of Walnut Creek, at an elevation of 49 feet (15 m).
Document 13: Selma, Lord, Selma: Selma, Lord, Selma is a 1999 American film based on true events that happened in March 1965, known as Bloody Sunday in Selma, Alabama. The film tells the story through the eyes of an 11-year-old African-American girl named Sheyann Webb (Jurnee Smollett). It was directed by Charles Burnett, one of the pioneers of black American independent cinema. It premiered as a television movie on ABC on January 17, 1999.
Document 14: National Register of Historic Places listings in Phillips County, Arkansas: This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Phillips County, Arkansas, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.
Document 15: Wheatland, Montana: Wheatland is a census-designated place (CDP) in Broadwater County, Montana, United States. The population was 568 according to the 2010 census.
ground_truth: U.S.
sub_queries: Whitewater >> located in the administrative territorial entity Answer: Phillips County
Which place is The Ernest Green Story in? Answer: Arkansas
Walnut Corner, Phillips County , #2 >> country Answer: U.S.