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 Hungary defeat to become Central European Champions in 1953? Passage:Budai made his debut for Hungary on 2 May 1949 in a 6-1 win against Austria in the Central European Championship. He subsequently played 39 times for Hungary and scored 10 goals. Four of these goals came in a 12-0 win against Albania on 24 September 1950. As one of the legendary Mighty Magyars, he helped Hungary become Olympic Champions in 1952 and Central European Champions in 1953. He also played in the Hungary side that defeated England 6-3 at Wembley Stadium. During the 1954 FIFA World Cup he played in the group stage in the 9-0 win against South Korea and in the semi-final against Uruguay. However, despite an excellent performance in the latter game, he was dropped for the final to make room for Ferenc Puskás. He also played two games at the 1958 World Cup.
 Links: a. Match of the Century (1953 England v Hungary football match) b. Match of the Century (1953 England v Hungary football match) c. Austria national football team d. Central European International Cup
Example Output: d

Example Input: Question: Did "Don't Let Me Down" win any awards? Passage:Hardesty's solo recordings began in 1957; the first two, organized by the guitarist Mickey Baker, were never released are not known to exist. Twelve songs were recorded on January 15, 1958, at Cosimo Matassa's studio in New Orleans for Wing Records, a subsidiary of Mercury Records, but were never released until the 2012 CD The Domino Effect was issued worldwide by Ace Records (United Kingdom). The first time that Hardesty's name appeared on a single was with the Canadian vocal quartet the Diamonds, "Don't Let Me Down" (also known as "Chick-Lets"), which was recorded on March 4, 1958, and released the following month as Mercury 71291. In 1959, Hardesty recorded four tracks in New York City with Hank Jones. Two were released as a single on Paoli, the only release from this label; they were also released shortly after by Mutual, both labels having connections to Philadelphia. The Mutual release was listed on Philadelphia radio station WIBG's Future Forty chart for November 2, 1959, but did not chart elsewhere. The four tracks were purchased by King Records in 1961 and were re-released as two 45s by Federal Records in April and June 1961. Hardesty recorded four more songs in October 1961, which were released in 1962 by Federal; two are not instrumentals and had vocals by the New Orleans guitarist Walter "Papoose" Nelson. Hardesty co-wrote the title track of Fats Domino's 1964 album, Fats on Fire.
 Links: a. Single (music) b. The Diamonds c. The Diamonds d. The Diamonds
Example Output: b

Example Input: Question: Who are the prominant Almack's? Passage:Lord Jersey married Lady Sarah Sophia Fane, daughter of John Fane, 10th Earl of Westmorland, on 23 May 1804. She was the eldest grandchild and heiress of Robert Child, principal shareholder of the banking firm Child & Co. Lord Jersey added the surname Child to the Villiers surname by royal licence in 1819. Lady Jersey was one of the great hostesses of English society, a leader of the ton during the Regency era and the reign of George IV, and a patroness of Almack's. Lord Jersey was an ardent fox hunter and a breeder and trainer of horses, owning two Epsom Derby winners, in Mameluke (1827) and Bay Middleton (1836) as well as other notable thoroughbreds such as Glencoe. His wife's numerous love affairs did not trouble him: asked why he had never fought a duel to protect her honour, he replied that he could hardly fight every man in London.
 Links: a. Epsom Derby b. Duel c. Almack's d. Mameluke (British horse)
Example Output:
c