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: What city was the person who defeated Ignacio in the second round born in? Passage:Born in Madrid, Truyol had a breakthrough season in 1996 when he came close to breaking into the top 100. Beginning the year ranked 238, by August he had made it to 104 in the world. In his first main draw appearance in an ATP Tour tournament, at the Trofeo Conde de Godó in Barcelona, Truyol reached the third round, with wins over Sándor Noszály and world number 25 Paul Haarhuis. A qualifier, he also managed to take eventual finalist Marcelo Ríos to three sets before being eliminated. Soon after he reached the second round of the Oporto Open and then won his first Challenger title, in Istanbul. He made his third ATP Tour appearance that season in Indianapolis and had an opening round win over the previous year's runner-up, Bernd Karbacher. In the second round he was beaten in three sets by Àlex Corretja. He made further main draw appearances in Bournemouth, Palermo and Tel Aviv to close out the year.
 Links: a. Madrid b. Àlex Corretja c. Amex-Istanbul Challenger d. Tel Aviv Open

Ex Output:
b


Ex Input:
Question: Who won the World Cup where the Costa Rican team had a prominent performance? Passage:Since the late 1980s, the team has continuously been visible as a solidly competitive side, with a prominent performance in the 1990 FIFA World Cup in Italy, making it to the knockout stage in their debut after finishing second in their group during the first phase, below Brazil. They also managed to qualify for the 2002 and 2006 FIFA World Cups. In 2014, Costa Rica made their best performance in history by finishing first in their group that consisted of three former World Cup champions: Uruguay, Italy, and England. During the Round of 16 they defeated Greece 5–3 via a penalty shootout after a 1–1 draw. Moreover, during the match against a much better team, Navas saved more than 15 shots due to the Costa Rican very weak defense. The match was characterized as "Navas vs Greece". They reached the quarterfinals for the very first time as the Ticos were defeated by the Netherlands also in a penalty shootout (3–4) after a scoreless draw on 5 July. Their 2018 World Cup campaign ended in a 4th place group stage exit with their only point coming from a 2-2 draw vs Switzerland.
 Links: a. 2006 FIFA World Cup b. 1990 FIFA World Cup c. 2006 FIFA World Cup d. Keylor Navas

Ex Output:
b


Ex Input:
Question: Which of Shapovalov's opponents at Gatineau and Drummondville was younger? Passage:In March in Gatineau, Shapovalov captured his fourth ITF Futures singles title after defeating Gleb Sakharov in straight sets. Two weeks later, he won his first ATP Challenger title with a victory over Ruben Bemelmans at the 75K in Drummondville, and was the youngest Canadian to win a Challenger until Félix Auger-Aliassime's victory at the Open Sopra Steria de Lyon later in the year. The next week, he was defeated by Mirza Bašić in the final of the ATP Challenger 50K in Guadalajara, stopping his winning streak at 17 matches. At the French Open in May, his first professional Grand Slam, he was defeated in the first round of qualifying by the first seed Marius Copil in three sets. In June, Shapovalov qualified for the ATP 500 at the Queen's Club Championships, his fourth ATP main draw but his first as a qualifier. In the first round, he defeated his second top 50 player, world No. 47 Kyle Edmund, before losing to world No. 14 Tomáš Berdych. At Wimbledon in July, Shapovalov was awarded a wild card for the main draw. He was defeated by Jerzy Janowicz in the opening round. At the end of the month, he won his second ATP Challenger title, defeating compatriot Peter Polansky in the final of the 75K in Gatineau.
 Links: a. Gleb Sakharov b. Jalisco Open c. Gleb Sakharov d. 2017 Wimbledon Championships

Ex Output:

a