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: Who did Vinny Del Negro play for before he signed with the Spurs? Passage:The 199293 NBA season was the Spurs' 17th season in the National Basketball Association, and 26th season as a franchise. During the offseason, Terry Cummings suffered a serious knee injury and only played in the final eight games of the season. With the acquisition of Dale Ellis from the Milwaukee Bucks and signing free agent Vinny Del Negro, plus re-signing Avery Johnson after a brief stint with the Houston Rockets, the Spurs struggled with a 911 start to the season as new head coach Jerry Tarkanian was fired. After playing one game under Rex Hughes, the team hired John Lucas II as their new coach. At midseason, they acquired J.R. Reid from the Charlotte Hornets. Under Lucas, the Spurs would play solid basketball posting a 10-game winning streak in January, then winning eight straight in February, finishing second in the Midwest Division with a 4933 record. David Robinson and Sean Elliott were both selected for the 1993 NBA All-Star Game.
Links: a. Jerry Tarkanian b. Vinny Del Negro c. Vinny Del Negro d. John Lucas II
Example Output: b

Example Input: Question: What was the population of Southampton when Charles Ogston first arrived there? Passage:Ogston was the son of Alexander Milne Ogston of Ardoe, Kincardineshire. He was educated at the Royal Military College, Sandhurst and commissioned a second lieutenant in the Gordon Highlanders in November 1897. He served on the North-West Frontier of India from 1897 to 1898 and took part in the Tirah Campaign under Sir William Lockhart. Promoted to lieutenant on 21 July 1899, he was later the same year sent to South Africa to serve as an intelligence officer in the Second Boer War. He took part in the Relief of Kimberley (February 1900), including the Battle of Magersfontein (11 December 1899), followed by fighting in the Orange Free State from February to May 1900, including the Battle of Paardeberg (1827 February 1900). In May 1900 he was posted to the Transvaal Republic, where he took part in the occupation of Johannesburg and Pretoria, the capital of the republic, followed by service around the occupied areas, including the Battle of Bergendal (August 1900) and fighting near Lydenburg. He was promoted to captain on 22 January 1902, and following the end of hostilities in early June 1902 left Cape Town on board the SS Orotava, arriving at Southampton the next month.
Links: a. Siege of Kimberley b. Battle of Bergendal c. Southampton d. Southampton
Example Output: c

Example Input: Question: Were Freiburg and Leipzig located in the same country? Passage:He attended schools in Brixen and Innsbruck and served as a nurse during the Franco-Prussian War. In 1871, following his father's wishes, he began studying economics, eventually attending schools in Leipzig, Breisgau and Freiburg, where he was a member of the Corps Suevia Freiburg. His interest in hunting led him to give up his studies and take positions as a game warden and forester, first for the estates of Count Ernst II, then in Schillersdorf, Upper Silesia, for Nathaniel Meyer von Rothschild., but he had to quit due to an illness. After convalescing in Munich an acquaintance, Eduard von Grutzner, suggested art as a career, so Pfretzschner studied sculpture with Edmund von Hellmer in Vienna and Ludwig Manzel in Berlin, where he worked from 1891 to 1913, becoming a Professor at the Prussian Academy of Art.
Links: a. Brixen b. Freiburg im Breisgau c. Silherovice d. Ludwig Manzel
Example Output:
b