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.

Example Input: Question: When was the school Gunnarsson attended from 1991 to 1992 founded? Passage:Gunnarsson was born in Boras, Sweden. Gunnarsson became a lieutenant in 1974 and he attended the Marine Corps Command and Staff College at the Marine Corps Base Quantico from 1991 to 1992. After his time at Quantico, Gunnarsson was posted to the Swedish Armed Forces Headquarters, Plans and Policy Directorate, as a section head. In 1994, he took command of one of the marine defense battalions in the Vaxholm Coastal Artillery Regiment (KA 1). Gunnarsson was commanding officer of the Marinens krigshogskola (MKHS) from 1995 to 1996 and was promoted to colonel in 1996. He was then sent to Croatia as Chief Military Observer of the United Nations Mission of Observers in Prevlaka (UNMOP) based out of Cavtat. Gunnarsson served as the first mission commander from January to November 1996. In 1997, he was promoted colonel 1st class, and posted as Chief of the Naval Staff. In 1999, he was promoted to major general and assumed the position of Assistant Head of Plans and Policy Directorate, Swedish Armed Forces Headquarters. This posting made him the Supreme Commander's main planner for long term planning and responsible for the Swedish Armed Forces' annual reports to the Ministry of Defence and the Riksdag. In 2002, Gunnarsson was promoted to lieutenant general and appointed head of the General Training and Management Directorate (Grundorganisationsledningen).
Links: a. Marine Corps University b. United Nations Mission of Observers in Prevlaka c. Swedish Armed Forces d. Vaxholm Coastal Artillery Regiment
Example Output: a

Example Input: Question: What was Hungary's record in the 1958 World Cup? Passage:Budai made his debut for Hungary on 2 May 1949 in a 6-1 win against Austria in the Central European Championship. He subsequently played 39 times for Hungary and scored 10 goals. Four of these goals came in a 12-0 win against Albania on 24 September 1950. As one of the legendary Mighty Magyars, he helped Hungary become Olympic Champions in 1952 and Central European Champions in 1953. He also played in the Hungary side that defeated England 6-3 at Wembley Stadium. During the 1954 FIFA World Cup he played in the group stage in the 9-0 win against South Korea and in the semi-final against Uruguay. However, despite an excellent performance in the latter game, he was dropped for the final to make room for Ferenc Puskas. He also played two games at the 1958 World Cup.
Links: a. 1958 FIFA World Cup squads b. Central European International Cup c. Uruguay national football team d. Ferenc Puskas
Example Output: a

Example Input: Question: What was Daniel Coit Gilman president of? Passage:In his will Johns Hopkins (1795-1873) left his summer home and estate, Clifton, then northeast of Baltimore, off the Harford Road, to the university for its new campus along with $7 million, split between the university and a hospital, also named for him. One of his provisions was that only interest obtained from his stock in the Baltimore and Ohio Railroad could be used to build facilities for the university. Unfortunately, after Johns Hopkins' death, the B&O Railroad fell into mismanagement; its eventual financial collapse was hastened by the Financial Panic and Recession of 1893 and the stock's value declined drastically. Therefore, the original campus of the university was established by first President Daniel Coit Gilman in downtown Baltimore along North Howard Street, between West Center, Little Ross, and West Monument Streets on the west side of the Mount Vernon-Belvedere neighborhood, where buildings were already available. However, this location did not permit room for growth and soon the trustees began to look for a place to move. Eventually, Hopkins would relocate to the former Homewood House and Estate of Charles Carroll, Jr. (son of Charles Carroll of Carrollton, 1737-1832) built 1801-1803, and the later Wyman Villa estate of JHU Board member William Wyman, built in the 1880s. Here JHU created the park-like main campus of Hopkins Homewood, set on 140 acres (0.57km) in what today lies between the north Baltimore neighborhoods of Charles Village (begun in the 1870s, and then known as Peabody Heights) to the east, the planned suburban-style communities of Guilford (established 1913) and Roland Park (established early 1890s) to the north, and to the west, the mill towns of Hampden-Woodberry along the Jones Falls stream valleys and tributary Stony Run through Wyman Park and the Wyman Park Dell.
Links: a. Roland Park, Baltimore b. Panic of 1893 c. Guilford, Baltimore d. Daniel Coit Gilman
Example Output:
d