Task: Question Answering
Input (English): Context: A machine gun is a fully automatic mounted or portable firearm, designed to fire bullets in quick succession from an ammunition belt or magazine, typically at a rate of 300 to 1800 rounds per minute. Fully automatic firearms are generally categorized as submachine guns, assault rifles, battle rifles, automatic shotguns, machine guns, or autocannons. Machine guns with multiple rotating barrels are referred to as "rotary machine guns"., The United Nations (UN) is an intergovernmental organization to promote international co-operation. A replacement for the ineffective League of Nations, the organization was established on 24 October 1945 after World War II in order to prevent another such conflict. At its founding, the UN had 51 member states; there are now 193. The headquarters of the United Nations is in Manhattan, New York City, and experiences extraterritoriality. Further main offices are situated in Geneva, Nairobi, and Vienna. The organization is financed by assessed and voluntary contributions from its member states. Its objectives include maintaining international peace and security, promoting human rights, fostering social and economic development, protecting the environment, and providing humanitarian aid in cases of famine, natural disaster, and armed conflict., The Korean War (in South Korean , "Korean War"; in North Korean , "Fatherland Liberation War"; 25 June 1950  27 July 1953) began when North Korea invaded South Korea. The United Nations, with the United States as the principal force, came to the aid of South Korea. China came to the aid of North Korea, and the Soviet Union gave some assistance., A light machine gun (LMG) is a machine gun designed to be employed by an individual soldier, with or without an assistant, as an infantry support weapon. Light machine guns are often used as squad automatic weapons., The Lewis gun ( or Lewis automatic machine gun or Lewis automatic rifle ) is a World War I - era light machine gun of American design that was perfected and mass produced in Great Britain , and widely used by British and Dominion troops during World War I. It continued in service with a number of armed forces through to the end of the Korean War . It is visually distinctive because of its wide tubular cooling shroud around the barrel and its top - mounted drum - pan magazine . It was also widely used as an aircraft machine gun , almost always with the cooling shroud removed , during both world wars ., Subject: lewis gun, Relation: service_retirement, Options: (A) 1945 (B) 1950 (C) 1953 (D) 300
Output (English): 1953