In this task, you are given a set of context paragraph and some supporting facts to answer a question. Your task is to generate answer for given question based on set of context paragraphs and supporting facts.

Example Input: Context_1 : Shizhu Tujia Autonomous County, or Shizhu County for short(石柱土家族自治县 Pinyin: Shízhù Tǔjiāzú Zìzhìxiàn) is located in southeastern Chongqing, China. It is south to Yangtze River, and neighboured to Pengshui County southernly, Fengdu County southwesternly, Zhong County northwesternly and Wanzhou District northernly, which are County-level divisions of Chongqing Municipality, and also to Lichuan CLC of Hubei Province easternly. It's in the center zone of Three Gorges Reservoir Region, and the only autonomous county for ethnic minorities in this region. Context_2 : Wanzhou District () is a city on the upper reaches of the Three Gorges of the Yangtze River in China. It is currently governed as a district of Chongqing Municipality, bordering Sichuan to the northwest and Hubei to the southeast. It was formerly known as Wanxian or Wan County (). Prior to Chongqing's formation as a direct-controlled municipality, Wanzhou was part of Sichuan province. The urban core of Wanzhou is 228 km away from Chongqing's city proper. Context_3 : Luotian Station is a railway station located in Luotian Town, Wanzhou District, Chongqing Municipality, People's Republic of China, on the Yiwan Railway which operated by China Railway Corporation. Context_4 : Wanzhou Wuqiao Airport (IATA: WXN, ICAO: ZUWX) is an airport serving Wanzhou District of Chongqing, China. It is located 15 km from the centre of Wanzhou. The airport was opened on 29 May 2003. Context_5 : The Second Wanzhou Yangtze River Bridge is a suspension bridge over the Yangtze River in Wanzhou District of Chongqing, China. Completed in 2004, it has a main span of 580 m places it among the longest suspension spans in the world. Context_6 : The Wanzhou Sports Center () is a sports venue in Wanzhou District, Chongqing, China, on the bank of the Yangtze River. It has a multi-purpose stadium with a seating capacity of 26,000, and a natatorium with 1,650 seats. Construction began in March 2010, and the center was opened in October 2012. Context_7 : Wanzhou District is a district in Chongqing, China and the site of a former prefecture. Context_8 : Fushun (, formerly romanised as "Fouchouen", using French spelling, also as Fuxi (撫西 )) is a prefecture level city in Liaoning province, China, about 45 km east of Shenyang, with a population of 2,138,090 inhabitants (2010 census) and a total area of 11,272 km2 , 714 km2 of which is the city proper. Situated on the Hun River ("muddy river"), it is one of the industrial and economic development hubs in Liaoning. Context_9 : Liangping Airport () (IATA: LIA, ICAO: ZULP) , also called Wanzhou Liangping Airport, is a former dual-use military and civil airport, located west of Liangping (formerly called Liangshan) in Chongqing Municipality, China. It served the city of Wanxian (now Wanzhou District) from July 1988 until May 2003, when all civil flights were transferred to the new Wanzhou Wuqiao Airport. Context_10 : He Qifang (5 February 1912 – 24 July 1977; ) was a Chinese poet, essayist, literary critic and redologist. He was born in Wanxian, Sichuan Province, which is now Wanzhou District, Chongqing Municipality. He studied Philosophy at Peking University. Later in his life, he served as the director of the Institute of Literature at the Chinese Academy of Social Sciences. fact_1 : Fushun (, formerly romanised as "Fouchouen", using French spelling, also as Fuxi (撫西 )) is a prefecture level city in Liaoning province, China, about 45 km east of Shenyang, with a population of 2,138,090 inhabitants (2010 census) and a total area of 11,272 km2 , 714 km2 of which is the city proper. fact_2 : Wanzhou District () is a city on the upper reaches of the Three Gorges of the Yangtze River in China. Question: Which is a prefecture-level city, Fushun or Wanzhou District?
Example Output: Fushun

Example Input: Context_1 : Prudhoe Bay Oil Field is a large oil field on Alaska's North Slope. It is the largest oil field in both the United States and in North America, covering 213543 acre and originally containing approximately 25 Goilbbl of oil. The amount of recoverable oil in the field is more than double that of the next largest field in the United States, the East Texas oil field. The field is operated by BP; partners are ExxonMobil and ConocoPhillips Alaska. Context_2 : The Kern River Oil Field is a large oil field in Kern County in the San Joaquin Valley of California, north-northeast of Bakersfield in the lower Sierra foothills. Yielding a cumulative production of close to 2 Goilbbl of oil by the end of 2006, it is the third largest oil field in California, after the Midway-Sunset Oil Field and the Wilmington Oil Field, and the fifth largest in the United States. Its estimated remaining reserves, as of the end of 2006, were around 476 Moilbbl , the second largest in the state. It had 9,183 active wells, the second highest in the state. The principal operator on the field is Chevron Corporation Context_3 : Cantarell Field or Cantarell Complex is an aging supergiant oil field in Mexico. It was discovered in 1976 after oil stains were noticed by a fisherman, Rudesindo Cantarell Jimenez, in 1972. It was placed on nitrogen injection in 2000, and production peaked at 2.1 Moilbbl/d in 2003. In terms of cumulative production to date, it is by far the largest oil field in Mexico, and one of the largest in the world. However, production has declined since 2003, falling to 408000 oilbbl/d in April 2012, making it Mexico's second most productive oil field after Ku-Maloob-Zaap. Context_4 : The Tarn oil field is an oil field in North Slope Borough, Alaska, United States. It is adjacent to the Kuparuk Oil Field, Alaska's second largest oil field. Context_5 : The Round Mountain Oil Field is a large oil and gas field in the foothills of the Sierra Nevada, about 10 mi northeast of Bakersfield, California, United States. It is east of the giant Kern River Oil Field, one of the largest in the United States, and also close to the Mount Poso Oil Field and Kern Front Oil Field. With a cumulative total recovery of more than 110 Moilbbl of oil, it is the 48th largest oil field in California, but remains relatively productive with still about ten percent of its reserves remaining in the ground, according to the California Department of Oil, Gas, and Geothermal Resources (DOGGR). Context_6 : Carabobo is an oil field located in Venezuela's Orinoco Belt. As one of the world's largest accumulations of recoverable oil, the recent discoveries in the Orinoco Belt have led to Venezuela holding the world's largest recoverable reserves in the world, surpassing Saudi Arabia in July 2010. The Carabobo oil field is majority owned by Venezuela's national oil company, Petroleos de Venezuela SA (PDVSA). Owning the majority of the Orinoco Belt, and its estimated 1.18 trillion barrels of oil in place, PDVSA is now the fourth largest oil company in the world. The field is well known for its extra Heavy crude oils, having an average specific gravity between 4 and 16 °API. The Orinoco Belt holds 90% of the world's extra heavy crude oils, estimated at 256 billion recoverable barrels. While production is in its early development, the Carabobo field is expected to produce 400,000 barrels of oil per day. Context_7 : Dresser Industries was a multinational corporation headquartered in Dallas, Texas, United States, which provided a wide range of technology, products, and services used for developing energy and natural resources. In 1998, Dresser merged with its main rival Halliburton, Halliburton sold many of former Dresser non "oil patch" divisions, retaining the M W Kellogg Engineering and Construction Company and the Dresser oil-patch products and services that complemented Halliburton's energy and natural resource businesses. In 2001 Halliburton sold five separate, but somewhat related former Dresser non "oil patch" divisions, to an investment banking firm. Those five operations later took the name "Dresser Inc." In October 2010, Dresser Inc., was acquired by General Electric. It is headquartered in Addison, Texas. Context_8 : The North Belridge Oil Field is a large oil field along California State Route 33 in the northwestern portion of Kern County, California, about 45 miles west of Bakersfield. It is contiguous with the larger South Belridge Oil Field to the southeast, in a region of highly productive and mature fields. Discovered in 1912, it has had a cumulative production of 136553000 oilbbl of oil, and retains 27443000 oilbbl in reserve, as of the end of 2006, making it the 40th largest oil field in the state. Context_9 : The South Mountain Oil Field is a large and productive oil field in Ventura County, California, in the United States, in and adjacent to the city of Santa Paula. Discovered in 1916, and having a cumulative production of over 158 Moilbbl of oil, it is the 37th largest oil field in California and the second largest in Ventura County (after the Ventura field). As of the beginning of 2009, it retains 316 active wells, and has an estimated 1.4 Moilbbl of oil remaining recoverable with current technology. Vintage Production, a subsidiary of Occidental Petroleum, was the largest operator as of 2009. Context_10 : The Halliburton Company, an American multinational corporation. One of the world's largest oil field service companies, it has operations in more than 70 countries. It owns hundreds of subsidiaries, affiliates, branches, brands, and divisions worldwide and employs approximately 50,000 people. fact_1 : Dresser Industries was a multinational corporation headquartered in Dallas, Texas, United States, which provided a wide range of technology, products, and services used for developing energy and natural resources. fact_2 :  In 1998, Dresser merged with its main rival Halliburton, Halliburton sold many of former Dresser non "oil patch" divisions, retaining the M W Kellogg Engineering and Construction Company and the Dresser oil-patch products and services that complemented Halliburton's energy and natural resource businesses. fact_3 : The Halliburton Company, an American multinational corporation. fact_4 :  One of the world's largest oil field service companies, it has operations in more than 70 countries. Question: Dresser Industries, merged in 1998 with its main rival, what American multinational corporation, that is one of the world's largest oil field service companies?
Example Output: Halliburton

Example Input: Context_1 : Rookes Evelyn Bell Crompton, CB, FRS (31 May 1845 – 15 February 1940) was a British electrical engineer, industrialist and inventor. He was a pioneer of electric lighting and public electricity supply systems. The company he formed, Crompton & Co., was one of the world's first large-scale manufactures of electrical equipment. He was also an early campaigner for an international standard for electrical systems. He was involved with both the practical and academic sides of his discipline, being a founder member of the International Electrotechnical Commission and twice president of the Institution of Electrical Engineers. He was a fellow of the Royal Society and a founder member of the Royal Automobile Club. Context_2 : William Gosling (born 1932) is a British electrical engineer, Emeritus Professor of Electrical Engineering at the University of Bath, and pioneer of system design in electrical engineering. Context_3 : Horatio Saint George Anson (August 1, 1903 – June 30, 1925) was a British electrical engineer who in collaboration with Stephen Oswald Pearson discovered the Pearson–Anson effect, inventing the neon lamp relaxation oscillator. Context_4 : Elmer Tiling Cunningham (September 1, 1889 – June 14, 1965) was an American entrepreneur and businessman, specializing in vacuum tubes and radio manufacturing. He is best known for being the most successful business person to produce counterfeit (AKA bootleg) or unlicensed vacuum tubes (1915-1920). Cunningham was in direct violation by infringing on the Fleming and De Forest vacuum tube patents. Unlike other businesses making unlicensed or bootlegged vacuum tubes, Cunningham was very aggressive in his advertising. Manufacturers of counterfeit vacuum tubes generally ended their activities after a lawsuit has been filed but Cunningham came out ahead after various lawsuits brought against him and his company, the Audio Tron Sales Company. His successes encouraged many others to do the same thing. Context_5 : Sir John Ambrose Fleming FRS (29 November 1849 – 18 April 1945) was a British electrical engineer and physicist. He is known for inventing the first thermionic valve or vacuum tube. He is also famous for the left hand rule (for electric motors). He was born the eldest of seven children of James Fleming DD (died 1879), a Congregational minister, and his wife, Mary Ann, at Lancaster, Lancashire and baptised on 11 February 1850. Context_6 : Mervyn Joseph Pius O'Gorman (19 December 1871 – 16 March 1958) was a British electrical and aircraft engineer. After working as an electrical engineer, he was appointed Superintendent of what became the Royal Aircraft Factory at Farnborough in Hampshire in 1909. In 1916, following a scandal over the quality of the aircraft used by the Royal Flying Corps, he was removed from this post but continued to act in an advisory capacity. After the war he concentrated his energies on motoring issues, particularly road safety and traffic management, and played an important part in the publication of the Highway Code. He died in 1958 in Chelsea, London. Context_7 : Maurice Kenyon Taylor (26 June 1908 – 29 June 1986) was a British electrical engineer and inventor responsible for many diverse technological developments and inventions, producing over 70 patents during his career. Context_8 : Winston Laverne Shelton (born May 3, 1922) is an American inventor, electrical engineer and entrepreneur who has been awarded 76 US patents as an individual or as part of a team, as well as many corresponding patents. Shelton's patents have had an impact relating to home washing machines and the preparation of food in both the Quick Service Restaurant (QSR) industry and fine dining. Technologies Shelton developed while an engineer at General Electric are still in use after more than fifty years. His patent for the modern "Washing Machine" (US 3257830 A), licensed in 1965 to General Electric has been referenced in over 40 subsequent patents. Context_9 : Emile Oscar Garcke (1856 – 14 November 1930) was a naturalised British electrical engineer, industrial, commercial and political entrepreneur managing director of the British Electric Traction Company (BET), and early author on accounting. who is noted for writing the earliest standard text on cost accounting in 1887. Context_10 : Josephine Webb (born June 21, 1918) is an American electrical engineer who obtained two patents for oil circuit breaker contact design, known colloquially as "switchgear". She designed an eighteen-inch, full newspaper size fax machine with superior resolution. She co-founded Webb Consulting Company with her husband, also an electrical engineer. She is one of the first female electrical engineers, and considered a pioneer by the Society of Women Engineers. At Purdue University, she was one out of a total of five women engineers. fact_1 : Elmer Tiling Cunningham (September 1, 1889 – June 14, 1965) was an American entrepreneur and businessman, specializing in vacuum tubes and radio manufacturing. fact_2 :  He is best known for being the most successful business person to produce counterfeit (AKA bootleg) or unlicensed vacuum tubes (1915-1920). fact_3 :  Cunningham was in direct violation by infringing on the Fleming and De Forest vacuum tube patents. fact_4 : Sir John Ambrose Fleming FRS (29 November 1849 – 18 April 1945) was a British electrical engineer and physicist. fact_5 :  He is known for inventing the first thermionic valve or vacuum tube. Question: Elmer Tiling Cunningham an American entrepreneur was in direct violation by infringing on patents of a British electrical engineer known for inventing the first what?
Example Output:
thermionic valve