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: What was Sergei Ratnikov's previous employment before he was hired as JK Tallinna Kalev's manager? Passage:In January 2010, Sergei Ratnikov was appointed as manager. Tallinna Kalev won the 2011 Esiliiga were promoted back to the Meistriliiga. The club finished the 2012 season in ninth place, but avoided being relegated by defeating Tarvas 3–1 on aggregate in the relegation play-offs. In December 2012, Frank Bernhardt was appointed as manager. Tallinna Kalev finished the 2013 season in eighth place. In January 2014, former Estonia national team manager Tarmo Rüütli took over as manager. Rüütli subsequently left in March 2014 and Sergei Zamogilnõi took over as manager. Following a disappointing 2014 season, where Tallinna Kalev finished in 10th place and were relegated to the Esiliiga once again, Zamogilnõi was replaced by Marko Pärnpuu. Tallinna Kalev returned to the Meistriliiga after finishing the 2017 season as runners-up. In November 2017, Pärnupuu was replaced by Argo Arbeiter. The team finished the 2018 season in eighth place, after which Arbeiter left and Aleksandr Dmitrijev took over as manager.
 Links: a. Tarmo Rüütli b. Argo Arbeiter c. Sergei Ratnikov d. Frank Bernhardt
Example Output: c

Example 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
Example Output: b

Example Input: Question: How many square miles in size is the National park that Namakgale is next to? Passage:Namakgale is a large township lying 12 km outside Phalaborwa in Mopani District in the Limpopo province of South Africa. Its nearest neighbouring townships are Lulekani, Makhushane, Maseke and Mashishimale on the R71 road to Gravelotte. It is next to the Kruger National Park on the north eastern part of the Limpopo province previously Northern Transvaal. The township enjoys the annual Marula festival during the months of February and March, when the ripe Marula fruit harvest is at its peak, and the Marula traditional beer is brewed. This is home to the Amarula liqueur is harvested, and the pulp is shipped to Cape Town for further processing. The citizens of Namakgale will enjoy the Mopani worms first harvest during March and April, and the second harvest in December. the Mopani tree and the Morula tree are very important to the residents of the Namakgale as they bring important community subsistence farming. 
 Links: a. Lulekani b. Mopane c. Mopani District Municipality d. Kruger National Park
Example Output:
d

