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: How long did the king who was painted by Jan Matejko rule Poland? Passage:Modern history accepts this gateway as one of three constructed by Yaroslav the Wise. The golden gates were built in 1017-1024 (6545 by the Byzantine calendar) at about the same time the Saint Sophia Cathedral was erected. Mentions of an older construction, such as the one presented on a painting by Jan Matejko of king Bolesław I of Poland striking the Golden Gate with his sword during the intervention in the Kievan succession crisis in 1018, it is now regarded a legend. Originally named simply the Southern Gate, it was one of the three main entrances to the walled city, along with the Ladski and Zhydivski (Polish and Jewish) Gates. The last two have not survived. The stone fortifications stretched for only 3.5 km. The fortification of the Old Kyiv (Upper City) stretched from the Southern Gates down to what is now Independence Square and where the Lechitic Gate was located. From there, the moat followed what is now Kostyol Street, skirting St. Michael's Monastery and continuing along today's Zhytomyr Street toward the Jewish Gates (at ). From there, the fortification stretched what is now Yaroslaviv Val ("Yaroslav's Rampart") Street back to the Southern Gate.
 Links: a. Bolesław I the Brave b. Maidan Nezalezhnosti c. Bolesław I the Brave d. Lechites

Ex Output:
a


Ex Input:
Question: Who was the player of the year in the conference that Collins made first team of in 2008-09? Passage:Collins was the top returning scorer for the 2008–09 Kansas Jayhawks men's basketball team his junior year; every starter from the previous year's National Championship team graduated or departed for the NBA. Collins was on the early season Top 50 watchlist for the Naismith Award. He was also selected as being among the 17 Bob Cousy Award finalists, the Top 30 midseason Wooden Award candidates, the Top 30 midseason Naismith Award candidates and the Top 15 Oscar Robertson Trophy candidates. The team captain and vocal leader of the team, Collins was awarded the team's Danny Manning MVP award with Cole Aldrich following the season. Collins led the 2008–09 Jayhawks in points, minutes, assists and free-throw percentage. He led the team in scoring in 27 games, including the final 10 of the season. In the Big 12, he ranked third in scoring and fourth in assists. Collins made 35 consecutive free-throws over an eight-game span from January 10 – February 2 to set KU's all-time record. Over the course of the season he was named Big 12 Player of the Week three times. He was a unanimous selection to the 2008–09 Big 12 All-conference first team. He was a second-team 2009 NCAA Men's Basketball All-American by the United States Basketball Writers Association (USBW) and the National Association of Basketball Coaches (NABC) and was a third-team All America selection by the Associated Press and The Sporting News. On Monday, April 13, Collins announced that he would return to KU for his senior season.
 Links: a. United States Basketball Writers Association b. 2008–09 Big 12 Conference men's basketball season c. National Association of Basketball Coaches d. Oscar Robertson Trophy

Ex Output:
b


Ex Input:
Question: Who did the team play to win their first league championship? Passage:Dean Clark took over as head coach shortly after James' resignation, and led the 1997–98 Hitmen to a remarkable turnaround. The team improved to a 40–28–4 record and first-place finish in the Central Division, qualifying for the playoffs for the first time in franchise history. They defeated the Saskatoon Blades and Swift Current Broncos to reach the Eastern Conference final before falling to the Brandon Wheat Kings. Clark was awarded the Dunc McCallum Memorial Trophy as the WHL's top coach, and also won the Canadian Hockey League's Brian Kilrea Coach of the Year Award. Calgary improved to 51–13–8 in 1998–99, finishing one point ahead of the Kamloops Blazers for the regular season title. Led by Brad Moran, Pavel Brendl and goaltender Alexandre Fomitchev, the Hitmen lost just five games in the playoffs en route to their first league championship. They won the title at home before a WHL playoff record crowd of 17,139. They became the first Calgary-based team to qualify for the Memorial Cup since the Calgary Canadians won the 1926 title.
 Links: a. 1998–99 WHL season b. Swift Current Broncos c. Kamloops Blazers d. Brandon Wheat Kings

Ex Output:

a