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 Q]: Question: Who was the second top scorer during the 1955-56 Serie A? Passage:Throughout his club career, Pivatelli most notably played for A.C. Milan (1961–63); he also played for Hellas Verona F.C. (1950–53), Bologna F.C. 1909 (1953–60), and S.S.C. Napoli (1960–61). After being dropped from the Inter Youth Side, Pivatelli was acquired by Verona in 1950, with whom he made his Serie B debut at the age of 17, scoring his first professional goal in his second appearance with the club, in a 4–1 victory over Vicenza. The following season, he was promoted to the starting line-up, and scored a total of 25 goals in 68 games for his team during the next three seasons, also helping the struggling club avoid relegation. After joining Bologna in 1953, he made his Serie A debut with the club on 13 September 1953, in a 2–1 home win over Atalanta. With the Emilian side, he was the Serie A top-scorer during the 1955–56 Serie A season, with 29 league goals in 30 appearances, and was the only Italian player to win the Capocannoniere title during the 1950s. In total, he scored 105 goals for Bologna during his seven seasons with the club. After playing with Napoli for the 1960–61 season, he joined Milan in 1961, and was part of the side that won the Serie A title in 1962, and the European Cup in 1963 under manager Nereo Rocco, after which he subsequently retired from playing professional football.
 Links: a. UEFA Champions League b. Capocannoniere c. S.S.C. Napoli d. 1955–56 Serie A
[EX A]: b

[EX Q]: Question: How many people died in the incident that contaminated about 30,000 km?  Passage:Natural strontium is a mixture of four stable isotopes: Sr, Sr, Sr, and Sr. Their abundance increases with increasing mass number and the heaviest, Sr, makes up about 82.6% of all natural strontium, though the abundance varies due to the production of radiogenic Sr as the daughter of long-lived beta-decaying Rb. Of the unstable isotopes, the primary decay mode of the isotopes lighter than Sr is electron capture or positron emission to isotopes of rubidium, and that of the isotopes heavier than Sr is electron emission to isotopes of yttrium. Of special note are Sr and Sr. The former has a half-life of 50.6 days and is used to treat bone cancer due to strontium's chemical similarity and hence ability to replace calcium. While Sr (half-life 28.90 years) has been used similarly, it is also an isotope of concern in fallout from nuclear weapons and nuclear accidents due to its production as a fission product. Its presence in bones can cause bone cancer, cancer of nearby tissues, and leukemia. The 1986 Chernobyl nuclear accident contaminated about 30,000 km with greater than 10 kBq/m with Sr, which accounts for 5% of the core inventory of Sr.
 Links: a. Rubidium b. Mass number c. Electron capture d. Chernobyl disaster
[EX A]: d

[EX Q]: Question: How old was Danny Green the year that Marriott signed for League Two club Luton Town on a one-year contract? Passage:Marriott signed for League Two club Luton Town on a one-year contract on 20 May 2015. He made his debut as a 76th-minute substitute for Danny Green in a 1–1 draw away to Accrington Stanley on the opening day of 2015–16. Marriott scored his first goals for Luton in the following match, a 3–1 win at home to newly promoted Championship club Bristol City in the League Cup first round. This performance saw him named in the League Cup team of the round. Marriott signed a contract extension with Luton on 25 August until June 2017, with triggers to extend it for a further two years. He was shown a red card for making a gesture to the Leyton Orient fans in Luton's 2–1 win in the Football League Trophy on 1 September. Luton manager John Still, who was adamant he didn't deserve the red card said, "He shouldn't have done it but the punishment didn't fit the crime." Marriott scored a brace in consecutive substitute appearances against AFC Wimbledon and Hartlepool United, which resulted in two wins in a week to increase his tally for the season to six goals. He went on to score twice in 20 appearances, including a goalless drought of 10 matches, before scoring a consolation goal in a 4–1 defeat away to AFC Wimbledon on 13 February 2016. A return to form saw Marriott score four goals in five matches and increased his tally for the season to 12 goals after a 1–0 win away to Leyton Orient on 5 March. Marriott was named Luton Town Player of the Season, voted for by the club's supporters, and joint winner of the Luton Town Young Player of the Season award along with Cameron McGeehan on 1 May, chosen by the Luton Town management team. His fourth brace of 2015–16 in a 4–1 win at home to Exeter City on 7 May saw him finish the season as Luton's top scorer with 16 goals in 44 appearances. Marriott signed a new three-year contract with Luton on 20 July.
 Links: a. AFC Wimbledon b. Accrington Stanley F.C. c. Danny Green (footballer, born 1988) d. EFL Championship
[EX A]:
c