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: How long has the location at the fish's southernmost range been a country? Passage:The cocinero (Caranx vinctus), also known as the barred jack and striped jack, is a species of small marine fish classified in the jack family, Carangidae. The cocinero is distributed through the tropical eastern Pacific Ocean, ranging along the west American coastline from Baja California in the north to Peru in the south. It is a pelagic species, inhabiting the upper water column in both coastal and offshore oceanic waters, occasionally making its way into estuaries. The species may be identified by its colouration, having 8 or 9 incomplete dark vertical stripes on its sides, with scute and gill raker counts also diagnostic. It is small compared to most other species of Caranx, reaching a length of 37 cm in total. The cocinero is a predatory fish, taking small fishes, crustaceans, and various benthic invertebrates in shallower waters. Little is known of the species' reproductive habits. The cocinero is of moderate importance to fisheries along the west coast of South America, and the species has been used in aquaculture trials. It is taken by various netting methods and by spear, and is sold fresh, dried, and salted at market.
 Links: a. Gill raker b. Shore c. Peru d. Aquaculture
Example Output: c

Example Input: Question: What car did Sommer drive in the Vanderbilt Cup? Passage:Sommer was born in Mouzon, in the Ardennes département of France, into a wealthy Sedan carpet-making family. His father, Roger Sommer, broke the Wright Brothers' record for the longest flight in 1909. It was not until 1931 that Raymond started to display daredevil tendencies of his own, entering motor races in a privateer Chrysler Imperial. The following year, he won the 24 Hours of Le Mans race, despite having to drive over 20 hours solo after his teammate, Luigi Chinetti, retired ill. During the 1930s, Sommer was to dominate the French endurance classic, winning again in 1933 driving an Alfa Romeo alongside Tazio Nuvolari. He also led every race until 1938, only to suffer a mechanical failure, once when 12 laps in the lead. Sommer traveled to Long Island, New York, to compete in the 1936 Vanderbilt Cup where he finished fourth behind the winner, Nuvolari.
 Links: a. Luigi Chinetti b. Long Island c. Tazio Nuvolari d. Vanderbilt Cup
Example Output: d

Example Input: Question: Is the political committee that Zorin held a managerial position in until 1932 still active? Passage:Zorin was born in Novocherkassk. After joining the Soviet Communist Party in 1922, Zorin held a managerial position in a Moscow City Committee and the Central Committee of the Komsomol until 1932. In 1935, he graduated from the Communist Institute of Education (Высший коммунистический институт просвещения). In 1935-1941, Zorin worked on numerous Party assignments and as a teacher. In 1941-1944, he was employed at the People's Commissariat for Foreign Affairs. In 1945-1947, Zorin was the Soviet ambassador to Czechoslovakia. In 1948, he helped organize the Czechoslovak coup d'état. In 1947-1955 and again in 1956-1965, he was Deputy Minister of Foreign Affairs of the Soviet Union. At the same time, he held other positions, including that of the permanent Soviet representative at the UN Security Council in 1952-1953. In 1955-1956, Zorin was the first Soviet ambassador to the Federal Republic of Germany. In 1956-1965, he again represented the Soviet Union at the UN Security Council, which led to his famous confrontation with Adlai Stevenson on 25 October 1962, during the Cuban Missile Crisis.
 Links: a. Adlai Stevenson II b. Komsomol c. United Nations Security Council d. 1948 Czechoslovak coup d'état
Example Output:
b