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.

[Q]: 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 31 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 Ruutli took over as manager. Ruutli subsequently left in March 2014 and Sergei Zamogilnoi took over as manager. Following a disappointing 2014 season, where Tallinna Kalev finished in 10th place and were relegated to the Esiliiga once again, Zamogilnoi was replaced by Marko Parnpuu. Tallinna Kalev returned to the Meistriliiga after finishing the 2017 season as runners-up. In November 2017, Parnupuu 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 Ruutli b. Argo Arbeiter c. Sergei Ratnikov d. Frank Bernhardt
[A]: c

[Q]: Question: How old was Walter's oldest son when Walters passed away? Passage:Walter was born in Kansas City, Missouri, United States, in 1910. His ancestry was German/British on his father's side, and American/British on his mother's side. He was brought to England in 1915, and educated at Westminster School and afterwards in King's College, Cambridge, in 1931. He failed to obtain a research fellowship in Cambridge and so turned to doing basic and applied neurophysiological research in hospitals, in London, from 1935 to 1939 and then at the Burden Neurological Institute in Bristol, from 1939 to 1970. He also carried out research work in the United States, in the Soviet Union and in various other places in Europe. He married twice, had two sons from his first marriage, and one from the second. According to his eldest son, Nicolas Walter, "he was politically on the left, a communist fellow-traveller before the Second World War and an anarchist sympathiser after it." Throughout his life he was a pioneer in the field of cybernetics. In 1970, he suffered a brain injury in a motor scooter accident. He never fully recovered and died seven years later, on May 6, 1977.
Links: a. Cybernetics b. University of Cambridge c. Nicolas Walter d. Westminster School
[A]: c

[Q]: Question: Which team in the CIFL Championship Game had a better regular season record when Sheehan led his team to victory? Passage:Tyler Allen Sheehan is a former American football quarterback. Sheehan played collegiately at Bowling Green State University after a standout career at La Salle High School in Cincinnati, Ohio. After going undrafted in the 2010 NFL Draft, he signed with Houston Texans, where he was released after training camp. In 2011, he signed with the Cincinnati Commandos of the Continental Indoor Football League. Sheehan led the Commandos to a perfect 10-0 regular season, winning the league's MVP award. In the playoffs, Sheehan led the Commandos to the 2011 CIFL Championship Game, where they defeated the Marion Blue Racers 44-29. After the Commandos season ended, Sheehan signed with the Arizona Rattlers of the Arena Football League, but never appeared in a game. In 2012, Sheehan returned to the Commandos and led them to a 7-2 record, this time in the United Indoor Football League. The Commandos took the first place seed into the playoffs, and won Ultimate Bowl II 62-44 over the Florida Tarpons.
Links: a. CIFL Championship Game b. Cincinnati Commandos c. Florida Tarpons d. La Salle High School (Cincinnati, Ohio)
[A]:
b