Question: What Washington county did Alexander Vasilyevich Belyakov land in at the end of the first non-stop flight across the North Pole?

full_context: Document 1: Sauvie Island: Sauvie Island, in the U.S. state of Oregon, originally Wapato Island or Wappatoo Island, is the largest island along the Columbia River, at 26,000 acres , and one of the largest river islands in the United States. It lies approximately ten miles northwest of downtown Portland, between the Columbia River to the east, the Multnomah Channel to the west, and the Willamette River to the south. A large portion of the island is designated as the Sauvie Island Wildlife Area. Sturgeon Lake, in the north central part of the island, is the most prominent water feature. The land area is 84.82 km2 , or 20,959 acres). Most of the island is in Multnomah County, but the northern third is in Columbia County. The Sauvie Island Bridge provides access across the Multnomah Channel from U.S. Route 30 and was completed in June 2008, replacing the first bridge to connect the island to the mainland which was opened on 30 December 1950.
Document 2: Portland, Oregon: Portland ( ) is the largest city in the U.S. state of Oregon and the seat of Multnomah County. It is a major port in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia Rivers. The city covers 145 sqmi and had an estimated population of 639,863 in 2016, making it the 26th most populous city in the United States. Approximately 2,424,955 people live in the Portland metropolitan statistical area (MSA), the 25th most populous MSA in the United States. Its Combined Statistical Area (CSA) ranks 18th with a population of 3,160,488. Roughly 60% of Oregon's population resides within the Portland metropolitan area.
Document 3: Pangborn-Herndon Memorial Site: The Pangborn-Herndon Memorial Site is a monument in East Wenatchee, Washington, United States, dedicated to Clyde Edward Pangborn and Hugh Herndon, Jr., the two men who made the first non-stop flight across the Pacific Ocean. They departed from Misawa, Japan, on October 4, 1931, and landed near this site 41 hours later. The memorial is northeast of East Wenatchee and consists of a 14 ft , 14 shton basalt column atop a concrete base. The column is topped by 36 in wings made of aluminum.
Document 4: Seattle: Seattle ( ) is a seaport city on the west coast of the United States. It is the seat of King County, Washington. With an estimated 704,352 residents as of 2016 , Seattle is the largest city in both the state of Washington and the Pacific Northwest region of North America. In July 2013, it was the fastest-growing major city in the United States and remained in the Top 5 in May 2015 with an annual growth rate of 2.1%. In July 2016, Seattle was again the fastest-growing major U.S. city, with a 3.1% annual growth rate. The city is situated on an isthmus between Puget Sound (an inlet of the Pacific Ocean) and Lake Washington, about 100 mi south of the Canada–United States border. A major gateway for trade with Asia, Seattle is the fourth-largest port in North America in terms of container handling as of 2015 .
Document 5: Alexander Vasilyevich Belyakov: Alexander Vasilyevich Belyakov (Russian: Алекса́ндр Васи́льевич Беляко́в ; 21 December 1897 [O.S. 9 December] – 28 November 1982) was a Soviet flight navigator who, together with command pilot Valery Chkalov and co-pilot Georgy Baydukov, set a record for the longest uninterrupted flight in 1936 and made the first non-stop flight across the North Pole, flying from Moscow to Vancouver, Washington.
Document 6: Viktor Belenko: Viktor Ivanovich Belenko (Russian: Виктор Иванович Беленко , born 15 February 1947) is a former Soviet pilot who defected to the West while flying his MiG-25 'Foxbat' jet fighter and landed in Hakodate, Japan. The opportunity to examine the plane up close was an intelligence bonanza for the West. Belenko later became an American aerospace engineer.
Document 7: Vancouver: Vancouver ( , ) is a coastal seaport city in Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2016 census recorded 631,486 people in the city, up from 603,502 in 2011. The Greater Vancouver area had a population of 2,463,431 in 2016, making it the third-largest metropolitan area in Canada. Vancouver has the highest population density in Canada with over 5,400 people per square kilometre. With over 250,000 residents, Vancouver is the fourth-most densely populated city in North America behind New York City, San Francisco, and Mexico City according to the 2011 census. Vancouver is one of the most ethnically and linguistically diverse cities in Canada according to that census; 52% of its residents have a first language other than English. Vancouver is classed as a Beta global city.
Document 8: Washington State University Vancouver: Washington State University Vancouver is a campus of Washington State University, located on a 351 acre campus in Vancouver, Washington, approximately eight miles (13 km) north of the Columbia River and 17 miles north of downtown Portland, Oregon. Degrees offered by WSU Vancouver are conferred by Washington State University. WSU is the only "Research I" (RU/VH) institution in the Portland-Vancouver metropolitan area, based on the Carnegie Classification of Institutions of Higher Education. Previously an undergraduate transfer college, WSU Vancouver expanded to a full four-year university in 2006.
Document 9: Richard E. Byrd: Rear Admiral Richard Evelyn Byrd Jr., USN (October 25, 1888 – March 11, 1957) was an American naval officer who specialized in feats of exploration. He was a recipient of the Medal of Honor, the highest honor for valor given by the United States, and was a pioneering American aviator, polar explorer, and organizer of polar logistics. Aircraft flights in which he served as a navigator and expedition leader crossed the Atlantic Ocean, a segment of the Arctic Ocean, and a segment of the Antarctic Plateau. Byrd claimed that his expeditions had been the first to reach both the North Pole and the South Pole by air. However, his claim to have reached the North Pole is disputed.
Document 10: Vancouver Waterfront Park: Vancouver Waterfront Park is a planned 7.3 acre waterfront park in Vancouver, Washington, in the United States. The park will be part of a 32 acre , 21-block mixed-use urban redevelopment with office and retail spaces, and residential units. The site was originally home to a paper mill owned by Boise Cascade that closed in 2005. It was acquired by real estate developer Columbia Waterfront LLC in 2008 and a master plan from the firm was approved by the city government the following year. New street connections were built from the north in 2014 and 2015. The $1.3 billion project is expected to begin construction, consisting of a city park and pier and five residential, office and retail buildings, in 2016 and open in late 2017.
Document 11: Clyde Pangborn: Clyde Edward Pangborn ("c". October 28, 1895 – March 29, 1958) also known as "Upside-Down Pangborn" was an American aviator and barnstormer who performed aerial stunts in the 1920s. In 1931 Pangborn and co-pilot Hugh Herndon, Jr. flew their plane, "Miss Veedol", on the first non-stop flight across the Pacific Ocean.
Document 12: Vancouver, Washington: Vancouver is a city on the north bank of the Columbia River in the U.S. State of Washington, and the largest suburb of Portland, Oregon. Incorporated in 1857, it is the fourth largest city in the state, with a population of 161,791 as of April 1, 2010 census. Vancouver is the county seat of Clark County and forms part of the Portland-Vancouver metropolitan area, the 23rd largest metropolitan area in the United States. Originally established in 1825 around Fort Vancouver, a fur-trading outpost, the city is located on the Washington–Oregon border along the Columbia River, directly north of Portland. In 2005, "Money" magazine named it No. 91 on its list of best places in America to live. In 2016, WalletHub ranks Vancouver the 39th best place to live for families in the US.
Document 13: Pavel Belyayev: Pavel Ivanovich Belyayev (Russian: Павел Иванович Беляев ; 26 June 1925 – 10 January 1970), was a Soviet fighter pilot with extensive experience in piloting different types of aircraft. He was the first commander of the cosmonaut corps and the cosmonaut who commanded the historic Voskhod 2 mission which saw the first man walk in space in 1965.
Document 14: Columbia River: The Columbia River is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, Canada. It flows northwest and then south into the US state of Washington, then turns west to form most of the border between Washington and the state of Oregon before emptying into the Pacific Ocean. The river is 1243 mi long, and its largest tributary is the Snake River. Its drainage basin is roughly the size of France and extends into seven US states and a Canadian province. The fourth-largest river in the United States by volume, the Columbia has the greatest flow of any North American river entering the Pacific.
Document 15: Sukhoi: Nine years prior to the creation of the bureau, Pavel Sukhoi, a Soviet Russian aerospace engineer, took over team no. 4 of the CAHI's AGOS aviation, flying boat aviation and aircraft prototype engineering facility, in October 1930. Under Sukhoi's leadership, the team of the future design bureau started to take shape. The team, under the Tupolev OKB, produced experimental fighters such as the I-3, I-14, and the DIP, a record-breaking RD aircraft, the Tupolev ANT-25, flew by famous Soviet aviators, Valery Chkalov and Mikhail Gromov, and the long-range bombers such as the Tupolev TB-1 and the Tupolev TB-3.
ground_truth: Clark County