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.

Ex Input:
Question: Who owns the record company that released "Any Ol' Barstool"? Passage:"Any Ol' Barstool" is a song written by Deric Ruttan and Josh Thompson and recorded by American country music artist Jason Aldean. It was released in December 5, 2016 by Broken Bow Records as the third single from Aldean's seventh album They Don't Know (2016). "Any Ol' Barstool" gave Aldean his thirteenth number-one hit on the US Billboard Country Airplay chart and his eleventh top 5 hit on the Hot Country Songs chart. It also reached outside the top 50 on the Hot 100 chart. The song achieved similar chart success in Canada, reaching number one on the Canada Country chart and number 100 on the Canadian Hot 100 chart. It was certified Gold by Music Canada for selling over 40,000 units in that country. An accompanying music video for the single, directed by Shaun Silva, features Aldean playing in an empty bar against the story of a quarreling couple.
 Links: a. Billboard Hot 100 b. Deric Ruttan c. Jason Aldean d. BBR Music Group

Ex Output:
d


Ex Input:
Question: Which professional ice hockey league that McNab ever played in was formed first? Passage:After playing junior hockey in Saskatoon, Saskatchewan, McNab played on the Omaha Knights of the USHL in the 1946–48 season before being called up to the Detroit Red Wings of the National Hockey League in 1947. He would play on and off with the Red Wings until 1951, playing on the team that won the Stanley Cup in 1950. He played for the Indianapolis Capitols of the American Hockey League in 1950–51. Before the 1951–52 season, he was traded by the Red Wings to the Chicago Black Hawks, but never played for the team. Back surgery kept him out of action in 1951–52 and McNab then joined the New Westminster Royals of the Western Hockey League, where he played for seven seasons, retiring in 1959. He was voted league MVP in 1955, scoring 32 goals and 81 points.
 Links: a. Omaha Knights (AHA) b. Saskatoon c. National Hockey League d. United States Hockey League (1945–1951)

Ex Output:
d


Ex Input:
Question: Who did the mother of the reigning queen marry that allowed her to serve as regent? Passage:When Isabella first became queen, she was only three years old. The queen mother, Maria Christina of the Two Sicilies, served as regent. The first and foremost political division of the Isabeline era was between Carlists and Cristinos (or Isabelinos), the former being supporters of Infante Carlos, Count of Molina, a rival claimant to the throne and the latter being supporters of Maria Christina and Isabella. The former supported absolute monarchism and the traditionalism of the Antiguo Régimen ("Old Regime"); they were uniformly close to the Roman Catholic Church, and generally clericalist. The latter were generally supporters of constitutional monarchy (although some, including Maria Christina herself, were more inclined toward enlightened absolutism); they were liberals of one stripe or another, ranging from liberal conservatives and those whose liberalism was strictly economic to social liberals. In the 1830s, these two groups faced off in the First Carlist War, which the Cristinos won. The terms of surrender—notably the Convention of Vergara—left an opportunity for relatively moderate Carlists to continue to play a role in the country's politics, and many did so over the ensuing decades.
 Links: a. Enlightened absolutism b. Ancien Régime c. Maria Christina of the Two Sicilies d. Clericalism

Ex Output:

c