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.

Input: Consider Input: Question: What car did Sommer drive in the Vanderbilt Cup? Passage:Sommer was born in Mouzon, in the Ardennes département of France, into a wealthy Sedan carpet-making family. His father, Roger Sommer, broke the Wright Brothers' record for the longest flight in 1909. It was not until 1931 that Raymond started to display daredevil tendencies of his own, entering motor races in a privateer Chrysler Imperial. The following year, he won the 24 Hours of Le Mans race, despite having to drive over 20 hours solo after his teammate, Luigi Chinetti, retired ill. During the 1930s, Sommer was to dominate the French endurance classic, winning again in 1933 driving an Alfa Romeo alongside Tazio Nuvolari. He also led every race until 1938, only to suffer a mechanical failure, once when 12 laps in the lead. Sommer traveled to Long Island, New York, to compete in the 1936 Vanderbilt Cup where he finished fourth behind the winner, Nuvolari.
 Links: a. Luigi Chinetti b. Long Island c. Tazio Nuvolari d. Vanderbilt Cup

Output: d


Input: Consider Input: Question: Who owns the tallest building in Dubai? Passage:Dubai, the largest city in the United Arab Emirates, is home to many modern high-rises, 108 of which stand taller than . The tallest building in Dubai is the Burj Khalifa, which rises and contains 163 floors. The tower has stood as both the tallest building in the world and the tallest man-made structure of any kind in the world since its completion in January 2010. The second-tallest building in Dubai is the Marina 101, which also stands as the world's second tallest residential skyscraper. The skyscrapers of Dubai are, for the most part, clustered in three different locations. The land along E 11 Road was the first to develop, followed by the Dubai Marina neighborhood and the Business Bay district.
 Links: a. List of tallest buildings b. Burj Khalifa c. Burj Khalifa d. Burj Khalifa

Output: b


Input: Consider Input: Question: What location is the club that has had the most separate spells in the Premier League based in? Passage:Crystal Palace have had the most separate spells in the Premier League, with five; all but the latest lasted a single season. The club were relegated at the end of the inaugural 1992–93 season, won the 1993-94 First Division Championship, and were then promoted to the Premier League for 1994–95 campaign. This was the only season when the Premier League had four relegation places, Palace finished fourth from bottom, and were relegated to First Division. At end of 1996–97 season, Palace promoted to the top flight (through the play-offs), then relegated the following season when they finished at bottom. They won the play–offs in 2003–04, relegated to the Championship the following season. They won the play-offs at the end of the 2012–13 season, and for the first time avoid relegation the following season.
 Links: a. 1994–95 FA Premier League b. 1996–97 Football League c. Crystal Palace F.C. d. 1997 Football League play-offs


Output: c