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.

Input: Consider Input: Question: Who was the leader of Solidarity in 1991? Passage:The 1991 Polish parliamentary election was held on 27 October 1991 to elect deputies to both houses of the National Assembly. The 1991 election was notable on several counts. It was the first parliamentary election to be held since the formation of the Third Republic, the first entirely free and competitive legislative election since the fall of communism, the first completely free legislative election of any sort since 1928, and only the fifth completely free election in all of Polish history. Due to the collapse of the Solidarity movement's political wing, the 1991 election saw deep political fragmentation, with a multitude of new parties and alliances emerging in its wake. Low voting thresholds within individual constituencies, along with a five percent national threshold allocated to a small portion of the Sejm, additionally contributed to party fragmentation. As a result, 29 political parties gained entry into the Sejm and 22 in the Senate, with no party holding a decisive majority. Two months of intense coalition negotiations followed, with Jan Olszewski of the Centre Agreement forming a minority government along with the Christian National Union, remnants of the broader Center Civic Alliance, and the Peasants' Agreement, with conditional support from Polish People's Party, Solidarity and other minor parties.
 Links: a. Solidarity (Polish trade union) b. Solidarity (Polish trade union) c. Jan Olszewski d. Centre Agreement

Output: a


Input: Consider Input: Question: What year did the player who scored four goals against Rad Belgrade retire? Passage:In 1976, led by coach Dragan Bojović, the club won the second league and again provides a placement in the elite, thanks to the four goals by Jovica Škoro, three by Milomir Jakovljević and one by Dragiša Ćuslović, which brought the decisive 8–2 victory over Rad Belgrade, but they relegated again in the same season. In the season 1978–79, they joined the Yugoslav First League, and in that season, Yugoslav powerhouse Partizan suffered a sensational 3–0 home defeat from Napredak. In the season 1979–80, led by coach Tomislav Kaloperović, Napredak finished the championship as 4th and this in front of several Yugoslav top clubs, and qualified finally for the first time for a European competition, the 1980–81 UEFA Cup season, but they were eliminated already in the first round by Eastern Germany's club Dynamo Dresden. It got even worse, because in the same season the club finished the league unexpectedly in the last place and relegated to the Yugoslav Second League and competed there until 1988. In the season 1987–88, Napredak won the East Division of the second league and was promoted to the top tier, but the club could not keep in the first league and relegated for the third time in its history again in the debut season. Napredak remain in the second league until the season 1991–92, the last season of the Socialist Federal Republic of Yugoslavia, and was one of the clubs, which were member of the newly founded First League of the Federal Republic of Yugoslavia. In 1993, Napredak achieved a good six place, but the subsequent 1993–94 season, they relegated to the second league.
 Links: a. Dynamo Dresden b. Jovica Škoro c. 1980–81 UEFA Cup d. 1978–79 Yugoslav First League

Output: b


Input: Consider Input: Question: Who was the youngest of the initial members of the commission? Passage:The Turkel Commission (officially The Public Commission to Examine the Maritime Incident of 31 May 2010) is an inquiry set up by Israeli Government to investigate the Gaza flotilla raid, and the Blockade of Gaza. It is led by Israeli retired Supreme Court Judge Jacob Turkel. The other initial members of the commission were former President of the Technion and military expert, Amos Horev, and professor of international law, Shabtai Rosenne, who died in September 2010. The probe was overseen by two International observers: William David Trimble, former Leader of the Northern Irish Ulster Unionist Party and Northern Irish First Minister, a Nobel Peace Prize laureate, and Canadian former military judge Ken Watkin.
 Links: a. Amos Horev b. Blockade of the Gaza Strip c. Jacob Turkel d. Gaza flotilla raid


Output: c