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.

Example Input: Question: Did the player the Warriors drafted attend college in California? Passage:The Golden State Warriors last made the NBA Finals in , when they were still in San Francisco. In the years since, they moved to Oakland, briefly lost Rick Barry to the American Basketball Association, and named Warriors great Al Attles as head coach. Before the start of the 1974–75 season they traded future Hall of Famer Nate Thurmond to the Chicago Bulls for young center Clifford Ray. They also drafted Jamaal Wilkes, then known as Keith Wilkes, out of UCLA. With Barry as the offensive leader, and with Attles using a team approach to coaching, the Warriors managed to finish the season atop the Western Conference with 48 wins. In the playoffs, they defeated the Seattle SuperSonics in six games, then eliminated Thurmond and the Bulls in seven games to advance to the Finals.
 Links: a. 1974–75 NBA season b. Golden State Warriors c. UCLA Bruins men's basketball d. Al Attles
Example Output: c

Example Input: Question: Which of Messner's teachers at the University of Munich was older? Passage:After Meissner’s abitur at the Humanistisches Gymnasium, in 1910, he began the study of physics and mathematics at University of Tübingen. After three terms, he went to the University of Munich as a student of the experimentalist Wilhelm Röntgen and the theoretician Arnold Sommerfeld. After one year at Munich, he returned to Tübingen to be able to study spectroscopy with Friedrich Paschen. While still a student in 1914, Meissner was able to prove the existence of oxygen lines in the solar spectrum. He was awarded his doctorate in 1915, on a thesis with the title Interferometrische Wellenlängenbestimmung im infraroten Spektralbereich. In 1916 he became an assistant to Edgar Meyer at the University of Zurich, under whom he completed his Habilitation, in 1918, with the Habilitationsschrift title Untersuchungen des Neonspektrums. The following year, he married the Polish physicist Doctor Janka Kohn.
 Links: a. Habilitation b. Ludwig Maximilian University of Munich c. University of Tübingen d. Wilhelm Röntgen
Example Output: d

Example Input: Question: How old was Ando Hiroshige when he started the ukiyo-e print? Passage:Okazaki-shuku was a part of the flourishing castle town surrounding Okazaki Castle, the headquarters for Okazaki Domain. The classic ukiyo-e print by Andō Hiroshige (Hōeidō edition) from 1831 to 1834 depicts a Yahagibashi, one of the few bridges permitted by the Tokugawa shogunate on the Tōkaidō, and one of the longest bridges built in Japan during the early Edo period. Okazaki Castle is depicted in the distance on the far shore of the river. Following the Meiji restoration, with the construction of railroads, the route of what became the Tokaido Main Line was laid down through the nearby village of Hane ( Hane-mura) to the south. Unlike Goyu-shuku and Akasaka-juku, but this did not cause a huge economic decline to Okazaki-shuku. There was a horse-drawn rail line connecting Okazaki to the train station, as well as a teachers' school, which kept the town alive. On the other hand, Okazaki was not able to compete with the growth of Toyohashi, which was located directly on the railway, and which gained city-status first. Because of fires during World War II and the subsequent rebuilding of Okazaki in the post-war years, there are few remnants of the post town remaining today.
 Links: a. Hiroshige b. Hiroshige c. Goyu-shuku d. Hiroshige
Example Output:
a