In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Input: Consider Input: Question: When was the gunnery school David moved to in 1932 built? Passage:He was assigned as a midshipman on 1 May 1929 after finishing top of his class in five subjects. In 1930 he was assigned to the battleship Marlborough, part of the Third Battle Squadron; and the following year to the battlecruiser in September 1931 on which he served with fellow midshipman, and future vice admiral, Peter Gretton. While serving on the ship, Wanklyn was promoted to acting sub-lieutenant (the equivalent of an army second lieutenant) on 1 January 1932. Soon afterwards he moved to the naval gunnery school - HMS Excellent - at Whale Island, Portsmouth to learn more about naval navigation to qualify for his second ring at the rank of lieutenant. In February 1933 he moved to HMS Dolphin and was promoted to lieutenant on 1 February 1933.
 Links: a. Excellent b. Battlecruiser c. Vice admiral d. Whale Island, Hampshire

Output: a


Input: Consider Input: Question: How many people did Arnstadt command as a company commander of the 6th border company in Dermbach? Passage:In June 1949, Arnstadt registered for service with the Volkspolizei, the police force of the Soviet Occupation Zone, becoming an Anwärter der VP (police cadet) with the Kasernierte Volkspolizei in Gotha. In March 1950, Arnstadt was appointed to the German Border Police (Deutsche Grenzpolizei) in Dermbach, patrolling the Inner German border with West Germany. In 1952, Arnstadt failed his first attempt to become an officer at the police school in Sondershausen. In 1953, his marriage ended in divorce, with his two children Veronika and Uwe staying with the mother, and remarried shortly after. In 1954, Arnstadt passed his officer training at Sondershausen and was appointed the rank of Unterleutnant, and the following year was promoted to lieutenant. Arnstadt functioned as a recruiter for the German Border Police until 1957 when he was appointed as a company commander of the 6th border company in Dermbach. Arnstadt was responsible for a section of the border at Wiesenfeld, a region of Bezirk Suhl in the Rhön Mountains at the westernmost point of the Warsaw Pact. Arnstadt's section contained the highly-strategic Fulda Gap, which aroused the special interest of NATO, and a short distance from the US Army's Observation Post Alpha. Arnstadt moved with his wife to Wiesenfeld and in April 1957 became an unofficial collaborator (Geheimer Informator) of the Ministry for State Security (Stasi) until this relationship was ended fourteen months later. 
 Links: a. Company commander b. Inner German border c. Dermbach d. Kasernierte Volkspolizei

Output: a


Input: Consider Input: Question: Which band was created first of the Big Four of Thrash bands? Passage:Welcome to Hell influenced several later bands. Venom's music helped shape the development of many thrash metal bands, specifically the "Big Four of Thrash" (who in turn were highly influential): Metallica, Slayer, Anthrax, and Megadeth (Metallica opened for Venom on an early 1980s tour, and Venom opened for Metallica and Slayer on the Ride the Lightning tour, and Slayer played with them and Exodus on the Combat Tour in 1985). Venom would also be of extreme importance to the black metal scene and even the early death metal scene, with numerous bands copying styles, themes, and imagery from the band, such as the Swiss band Hellhammer (later to become Celtic Frost), whom also helped pioneer the genres. Music critic Bradley Torreano wrote that Venom "caught the attention of both metalheads and punks, the band was emulated by the former and turned into camp icons by the latter." Henry Rollins once compared the band to Spinal Tap.
 Links: a. Henry Rollins b. Slayer c. Death metal d. Metallica


Output: d