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: Which of the three singles Tamia was nominated for Grammys for in the 40th Annual Grammy Awards had the most sales? Passage:In 1994, Tamia signed her first recording deal with Warner Bros. Records and collaborated with veteran producer Quincy Jones on his album Q's Jook Joint (1995). Their output, the singles "You Put a Move on My Heart" and "Slow Jams", as well as "Missing You", a song Tamia recorded with Brandy, Gladys Knight, and Chaka Khan for the soundtrack of the 1996 motion picture Set It Off, each earned her nominations at the 40th Annual Grammy Awards. She later co-signed with Jones's Qwest Records label, a joint venture with Warner Bros., on which her self-titled debut album was released in 1998. Upon its release, Tamia received a mixed to positive reception by critics and garnered the singer two Juno Award nominations for Best New Solo Artist and R&B/Soul Recording of the Year at the 1999 award ceremony. In addition, it peaked at number sixty-seven on the Billboard 200 chart, selling 416,000 copies in the United States, and was eventually certified gold in Japan for 100,000 copies shipped to stores.
 Links: a. Tamia (album) b. Warner Records c. You Put a Move on My Heart d. Billboard 200
Example Output: c

Example Input: Question: Which of the regiments that Ellwood served in was the largest? Passage:Ellwood graduated from Duntroon in 1990 and was commissioned into the Royal Australian Infantry Corps. His early career included postings as a platoon commander in the 2nd/4th Battalion, Royal Australian Regiment and as an instructor in field training and tactics at Duntroon, before he was seconded to the British Army from 1998 for a two-year exchange with the Irish Guards, then stationed in Germany. During the secondment he deployed as part of the NATO intervention in the Kosovo War in 1999, serving as second-in-command of an armoured infantry company in the King's Royal Hussars Battle Group. For his service in Kosovo, Ellwood was awarded a Commander British Forces Commendation. He returned to Australia as a company commander and operations officer in the 5th/7th Battalion, Royal Australian Regiment (5/7RAR). Ellwood commanded B Company on operations in East Timor from October 1999 to April 2000, when 5/7RAR deployed with the International Force East Timor.
 Links: a. 2nd/4th Battalion, Royal Australian Regiment b. Kosovo War c. 2nd/4th Battalion, Royal Australian Regiment d. King's Royal Hussars
Example Output: a

Example Input: Question: What is the population of the country Pollaczek was visiting when the Germans completed their occupation of  Czechoslovakia. Passage:Austria was subsumed into Germany in 1938. Germany had been governed by Nazis since 1933, according to the twin tenets of populism through the ages: hope and hatred. The hatred was focused on Communists and Jews, and took increasingly sinister and destructive forms. Clara Katharina Pollaczek was subject to antisemitic persecution. She may have owed her survival to her possession of a Czechoslovak passport, acquired as a result of the marriage to Pollaczek. Two days after German troops were welcomed by cheering crowds into Vienna marking Austria's incorporation into Nazi Germany, she crossed to Prague where she lived for a while. When, in 1939, the Germans completed their occupation of Czechoslovakia, she was visiting friends in Switzerland. She stayed in Switzerland, receiving financial support from relatives, till war ended in 1945. During this period she became a Roman Catholic. (The last practicing Jew in her family had been her grandfather.) In 1945 she joined her son Karl who had ended up in Gillingham in England, but he was married with children: the home was cramped and, unlike her younger son, Clara did not feel settled in England. It was her brother, the lawyer Otto Loeb, who organised her return to Vienna in 1948.
 Links: a. Switzerland b. Antisemitism c. Gillingham, Kent d. World War II
Example Output:
a