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: How old was Alexander's wife when they got married? Passage:Ancient historians, as well as modern ones, have also written on Alexander's marriage to Roxana the beautiful [Persian]n woman. Robin Lane Fox writes, "Roxana was said by contemporaries to be the most beautiful lady in all Asia. She deserved her name of Roshanak, meaning 'little star', (probably rokhshana or roshana which means light and illuminating) in Persian. Marriage to a local noble's family made sound political sense, but contemporaries implied that Alexander, aged 28, also lost his heart. A wedding-feast for the two of them was arranged high on one of the Persian rocks. Alexander and his bride shared a loaf of bread, a custom still observed in Turkestan. Characteristically, Alexander sliced it with his sword. Ulrich Wilcken writes, "The fairest prize that fell to him was Roxana, the daughter of Oxyartes, in the first bloom of youth, and in the judgment of Alexander's companions, next to Stateira the wife of Darius, the most beautiful woman that they had seen in Asia. Alexander fell passionately in love with her and determined to raise her to the position of his consort."
 Links: a. Roxana b. Oxyartes c. Asia d. Roshanak

Output: a


Input: Consider Input: Question: Did Vordtriede's family join him in America beside his mother? Passage:After the Nazis came to power, he emigrated to Switzerland in 1933 and to the United States later. He began his studies in Zurich and worked part-time as a house teacher. Meanwhile, he wrote articles and book reviews for the Neue Zürcher Zeitung, using several pseudonyms because of prohibition of work. He earned his PhD and taught French and German Literature at various universities, including Princeton University and University of Wisconsin-Madison. During a journey to Europe, Vordtriede was surprised by the outbreak of the Second World War and interned as an Enemy alien in occupied France. By interventions, he became free months later and was allowed to go back to America. He met his mother in New York City late in 1941, who also emigrated to the USA. He received the American citizenship in 1946 and became a Guggenheim Fellow in 1957. His sister Fränze emigrated in 1947 and went to Philadelphia.
 Links: a. University of Wisconsin–Madison b. Philadelphia c. University of Wisconsin–Madison d. Switzerland

Output: b


Input: Consider Input: Question: How many more goals did Otto Addo score for Borussia Dortmund compared to his total goals with the Second Bundesliga? Passage:In 1998, Hannover finally promoted to the Second Bundesliga. In his first season, he scored seven goals in 30 games and was acknowledged as one of the elite players of the league. He then transferred to Borussia Dortmund in 1999 and played more than 75 times for the team, becoming German champion in 2002. However, he was also hampered by great injury troubles, as he tore his cruciate ligaments three times in this time, the first coming after a German Cup match against SC Freiburg on 15 July 2001. The player had an MRI scan which showed he had torn knee ligaments and underwent surgery on his right knee on 22 July at the Vail, Colorado clinic of world-renowned knee specialist surgeon Dr. Richard Steadman. He healed completely after that, and came back to play the 2002 UEFA Cup Final for Dortmund against Feyenoord Rotterdam on 8 May 2002, which Dortmund lost 3–2 at the Feijenoord Stadion in Rotterdam. On 7 September 2002, Addo tore right knee ligaments for the second time, in a 2004 African Cup of Nations qualifier versus Uganda in Kampala.
 Links: a. 2001–02 Bundesliga b. Borussia Dortmund c. 2001–02 Bundesliga d. Feyenoord


Output: b