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: Who was the editor of the Daily Express the year Morris traveled to the West Indies? Passage:Leaving Collurian he worked as a porter at Penzance railway station for the Great Western Railway and with the free pass, that was part of his entitlement, he travelled to London to search for a post as a journalist. He landed his first job with The Dairy Farmer and later Farmers Weekly. He travelled to the West Indies in 1939 and Canada where he joined the Canadian Army at the outbreak of World War II, but was invalided out in 1941. Back in Britain, he started as a sub-editor on the Daily Express, and later as a personal assistant to Manny Shinwell, a Labour MP, writing speeches for members of the party. In 1949 he became political columnist for the Daily Mirror, and unsuccessfully standing as a Labour party candidate for Bristol West in 1950 and 1951.
 Links: a. Canadian Army b. World War II c. Daily Mirror d. Daily Express
Example Output: d

Example Input: Question: Where did the Occupy movement begin? Passage:Occupy Melbourne was a social movement which took place from late 2011 to mid 2012 in Melbourne, Australia as part of the global Occupy movement. Participants expressed grievances concerning economic inequality, social injustice, corruption in the financial sector, corporate greed and the influence of companies and lobbyists on government. Protests began on 15 October 2011 in City Square with a 6-day-long protest encampment, from which people were forcibly evicted by Victoria Police at the request of the City of Melbourne CEO on 21 October 2011. From 2 November 2011, Occupy set up camp in Treasury Gardens before being moved on from that location in December. A significantly diminished number of protesters set up camp at Father Bob's church at his invitation until his retirement in January 2012. Physical manifestations of the movement had largely dissipated by mid-2012 though it adopted a strategy of decentralisation and became influential in the creation of new community networks, affinity groups and collectives.
 Links: a. Lobbying b. Occupy movement c. Bob Maguire d. City of Melbourne
Example Output: b

Example Input: Question: Which military branch that Penson may have served for has more active members? Passage:Penson's professional career began in April 1954 after he had had a successful three-year skein as a pitcher while he served in the military. Penson won 50 games pitching for his base team, although sources disagree about the branch in which he served, reported as the United States Air Force and the U.S. Army. Penson made the Phillies out of training camp in 1954 as a member of the team's early-season, 28-man roster. His five games pitched included three starts, and he split two decisions. His lone MLB win came in his first start, on Sunday, May 16, 1954. in the second game of a doubleheader at Connie Mack Stadium. He went six innings against the St. Louis Cardinals, and allowed four hits, four bases on balls, and one earned run. But he was forced to leave the game leading 6–3 when the game was suspended because of Pennsylvania blue laws prohibiting sporting events on Sunday evenings. The game resumed on Monday, May 17, and Philadelphia went on to win, 8–4; veteran Murry Dickson nailed down the save with three innings of one-run relief.
 Links: a. St. Louis Cardinals b. United States Air Force c. Pennsylvania d. United States Army
Example Output:
b