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: Which city that Trey Parker and Matt Stone commuted to has a larger population? Passage:The film opens as South Park creators Trey Parker and Matt Stone leave New York City and the 2011 opening night of their Broadway production The Book of Mormon to return to Los Angeles to begin the fifteenth season of South Park. The documentary chronicles the production of the season premiere, "HumancentiPad", beginning the Thursday prior to airing. Parker and Stone, alongside producers Anne Garefino, Vernon Chatman, Bill Hader, and Susan Arneson, discuss ideas for the episode. Parker mentions his annoyance with downloading the latest version of iTunes, and being forced to comply with the software's long list of terms and conditions. The rant leads to ideas, with Parker instructing the storyboard team on how to stage a shot. The film covers various aspects of production, including voice acting, animation, lip sync, communication with standards and practices, character design, and editing.
 Links: a. Bill Hader b. The Book of Mormon (musical) c. Broadway theatre d. New York City
Example Output: d

Example Input: Question: Who won the second race that Sebastian Vettel participated in? Passage:Driving in place of Robert Kubica, Vettel made his début in with BMW Sauber in the United States Grand Prix; making him (at that time) the youngest points scorer in Formula One by finishing eighth in the race. His second race came with Scuderia Toro Rosso in the 2007 Hungarian Grand Prix and he stayed at Toro Rosso until the end of the season. Vettel won his first race at the 2008 Italian Grand Prix starting from his first pole, which remains Toro Rosso's only win. He then moved to Red Bull for the season and stayed at Red Bull until the end of the season. During his six years at Red Bull, he secured four championships, 38 wins, 44 pole positions and 65 podium finishes. Vettel's first championship came at the age of 23 years and 134 days in , becoming the youngest ever world champion; this was followed by three consecutive championships. , a winless season for Vettel, was his final year with Red Bull; he then joined Scuderia Ferrari. In his first year with Ferrari, he secured 3 wins, 1 pole position, and 13 podium finishes, going on to finish 3rd in the standings. In the season, Vettel had no wins with Ferrari and finished 4th in the standings. However, in he finished the season in second place with 5 victories. His Grand Prix victories is the third highest of all-time, only behind Lewis Hamilton's wins and Michael Schumacher at 91.
 Links: a. Red Bull Racing b. 2007 Hungarian Grand Prix c. Robert Kubica d. List of Formula One driver records
Example Output: b

Example Input: Question: On what date did the 1998 championship led by John O'Mahony begin? Passage:In the 1998 championship, led by Mayo-born manager John O'Mahony, Galway won their first round encounter with Mayo, before overcoming Leitrim by 1-16 to 0-05 in the semi-final. The first final ended as a draw, 11 points apiece with Roscommon, but Galway won the replay in Hyde Park. In the semis, Galway came up against Ulster champions Derry, and won by 0-16 to 1-09. In the final the team faced a Kildare team that had just beaten the previous year's champions, Kerry, and were coached by 8 time All-Ireland winning manager Mick O'Dwyer. Galway went into the final as underdogs, but outstanding performances from Ja Fallon and Michael Donnellan in that match, along with a superbly taken goal from a young Padraig Joyce, helped Galway overcome the Lilywhites by 1-14 to 1-10. Captain Ray Silke lifted the Sam Maguire, and Galway became the first Connacht team in 32 years to win an All-Ireland title.
 Links: a. 1998 All-Ireland Senior Football Championship b. Jarlath Fallon c. Kildare GAA d. Dr. Hyde Park
Example Output:
a