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: Where was the Hudson's Bay Company headquartered when it controlled the Vancouver Island area? Passage:The Colony of Vancouver Island had been created in 1849 to bolster British claims to the whole island and the adjacent Gulf Islands, and to provide a North Pacific home port for the Royal Navy at Esquimalt. By the mid-1850s, the Island Colony's non-indigenous population was around 800 people; a mix of mostly British, French-Canadian, Metis, Hawaiians, but with handfuls of Iroquoians and Cree in the employ of the fur company, and a few Belgian and French Oblate priests (thousands of First Nations died due to the smallpox epidemic). Three years earlier, the Treaty of Washington had established the boundary between British North America and the United States of America west of the Rocky Mountains along the 49th parallel. The mainland area of present-day British Columbia, Canada was an unorganised territory under British sovereignty until 1858. The region was under the de facto administration of the Hudson's Bay Company, and its regional chief executive, James Douglas, who also happened to be Governor of Vancouver Island. The region was informally given the name New Caledonia, after the fur-trading district which covered the central and northern interior of the mainland west of the Rockies.
 Links: a. Gulf Islands b. Hudson's Bay Company c. Colony of Vancouver Island d. Rocky Mountains
Example Output: b

Example Input: Question: Who did the Bears defeat in their 1963 Super Bowl win? Passage:The Bears won fifteen games, as the 49ers had the year before, and won their first twelve before losing to the Miami Dolphins to deny a perfect season. The Bears' defense was ranked first in the league and only allowed 198 total points (an average of 12.4 points per game). The Bears won the NFC Central Division by seven games over the second place Green Bay Packers and earned the NFC's top seed and home field advantage throughout the playoffs at Soldier Field. In their two playoff games against the New York Giants and Los Angeles Rams, the Bears outscored their opponents 45–0 and became the first team to record back-to-back playoff shutouts. Then, in Super Bowl XX in New Orleans against the New England Patriots, the Bears set several more records. First, their 46 points broke the record that had been set by the Los Angeles Raiders in 1984 with 38 and tied by the 49ers the following year. Their 36-point margin of victory topped the 29-point margin of victory that the Raiders had put up in Super Bowl XVIII and stood as a record until the 49ers won Super Bowl XXIV, also in New Orleans, by 45 points over the Denver Broncos. It was the Bears' first NFL World Championship title since 1963.
 Links: a. 1963 NFL season b. 1985 Los Angeles Rams season c. Super Bowl XX d. 1985 Los Angeles Rams season
Example Output: a

Example Input: Question: Who was the last head coach to lead the Jets to the AFC Championship Game prior to John DeFilippo joining the team as their quarterbacks coach? Passage:DeFilippo became quarterbacks coach at Fordham in 2000 upon graduating from James Madison. The following year, DeFilippo enrolled at the University of Notre Dame to be a graduate assistant for the Notre Dame Fighting Irish. In the 2001 season, DeFilippo helped coach wide receivers and tight ends on Bob Davie's staff, then in 2002 worked with quarterbacks under Tyrone Willingham. From 2003 to 2004, DeFilippo was again quarterbacks coach at a Division I-AA program in New York City, Columbia, under Bob Shoop. He then moved up to the NFL in 2005 as offensive quality control coach for the New York Giants under Tom Coughlin and held that position until 2006. In 2007, DeFilippo joined Lane Kiffin's staff on the Oakland Raiders as quarterbacks coach and remained on staff in 2008 when Tom Cable replaced Kiffin during the season. DeFilippo became quarterbacks coach for the New York Jets under Rex Ryan in 2009. The Jets that year finished 9-7 and in the playoffs, defeated the Cincinnati Bengals and San Diego Chargers to make their first trip to the AFC Championship Game in 11 years, before losing to their former division rival Indianapolis Colts 17-30. DeFilippo also coached rookie quarterback Mark Sanchez, whom in 2009, became only the second rookie quarterback in NFL history to win multiple playoff games.
 Links: a. Bob Davie (American football) b. 1998 New York Jets season c. Tom Cable d. 2009 Indianapolis Colts season
Example Output:
b