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: Who was older when Heitler obtained his doctorate, Arnold Sommerfeld or Karl Herzfeld? Passage:In 1922, Heitler began his study of physics at the Karlsruhe Technische Hochschule, in 1923 at the Humboldt University of Berlin, and in 1924 at the Ludwig Maximilian University of Munich (LMU), where he studied under both Arnold Sommerfeld and Karl Herzfeld. The latter was his thesis advisor when he obtained his doctorate in 1926; Herzfeld taught courses in theoretical physics and one in physical chemistry, and in Sommerfeld's absence often took over his classes. From 1926 to 1927, he was a Rockefeller Foundation Fellow for postgraduate research with Niels Bohr at the Institute for Theoretical Physics at the University of Copenhagen and with Erwin Schrödinger at the University of Zurich. He then became an assistant to Max Born at the Institute for Theoretical Physics at the University of Göttingen. Heitler completed his Habilitation, under Born, in 1929, and then remained as a Privatdozent until 1933. In that year, he was let go by the university because he was Jewish.
 Links: a. University of Göttingen b. Ludwig Maximilian University of Munich c. Arnold Sommerfeld d. Arnold Sommerfeld

Ex Output:
c


Ex Input:
Question: How long had FIU Stadium been standing for the year Straker played in a game against Honduras there? Passage:In May 2011, he was called up for the Grenadian national team for the upcoming CONCACAF Gold Cup. Straker played in two pre-tournament friendlies, including his debut in a 2–2 home draw with Antigua and Barbuda on 27 May 2011. He made his competitive debut for Grenada in their first match in the Gold Cup, a 4–0 loss to Jamaica at the Home Depot Center on 6 June 2011. Straker played in their two remaining group stage fixtures, a 7–1 defeat to Honduras at the FIU Stadium on 10 June 2011 and a 4–0 defeat to Guatemala at the Red Bull Arena on 13 June. He played in Grenada's three 2012 Caribbean Cup qualification second round matches, although they missed out on qualifying for the tournament after finishing in third place in their group on goal difference. He scored his first international goal with a 33rd-minute penalty kick in Grenada's 3–1 home defeat to Haiti in a 2018 FIFA World Cup qualifier on 4 September 2015.
 Links: a. Honduras national football team b. Riccardo Silva Stadium c. Antigua and Barbuda national football team d. Dignity Health Sports Park

Ex Output:
b


Ex Input:
Question: How old was Jacques Cartier when he named Baie des Chaleurs? Passage:Bathurst had been the location of the annual Mi'kmaq summer coastal community of Nepisiguit prior to European settlement. Europeans first reached the shores of the Baie des Chaleurs when in 1534 it was named by Jacques Cartier. Early settlers from France came to the area in the 17th century in what became part of the colony of Acadia. In 1607 Samuel de Champlain sailed into the Miramichi, and in 1636, Nicolas Denys was granted a seignory by the French crown, apparently the third grant in the colony of Acadie. Jean Jacques Enaud, who hailed from the French Basque Country, was granted in 1638 the seignory at the southeastern gap of the harbor later named Alston Point. Remark is made on William Francis Ganong's map of Bathurst Harbour, depicted here at left, of the residence of Nicolas Denys and the seignory of Gobin.
 Links: a. Nicolas Denys b. Miꞌkmaq c. Jacques Cartier d. Nicolas Denys

Ex Output:

c