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 Rudy Vallee when he reached number 15 on the Billboard charts? Passage:Rudy Vallee was the first artist to make the charts in Billboard magazine with "As Time Goes By" when he took the song to number 15 in 1931, but after the song was featured in the film Casablanca his recording was reissued and spent four weeks at number one in 1943. "Begin the Beguine" was first put on the charts by Xavier Cugat & His Waldorf-Astoria Orchestra with Don Reid on vocal for two weeks in 1935 when it reached number 13. Patti Austin's "We're in Love" made it to number 90 on the magazine's R&B chart in February 1978, and the Expanded Edition CD bonus track "I Never Said I Love You" was first recorded by Barbara Mandrell for her 1976 album Midnight Angel but was a number 84 pop hit for Orsa Lia that also spent a week at number one on the magazine's Easy Listening chart in 1979.
Links: a. Waldorf Astoria New York b. Casablanca (film) c. Barbara Mandrell d. Rudy Vallee

Output: d

Input: Consider Input: Question: How long had Darrell Royal been working as a head coach the year he learned about the wishbone offense? Passage:In 1968, Texas head coach Darrell Royal and his offensive coordinator Emory Bellard introduced what would become known as the wishbone offense. The wishbone was derived from the Split-T offense run at Oklahoma under Bud Wilkinson. In the formation, the quarterback lines up with a fullback and two tailbacks behind him, and on any play may keep the ball, hand off to the fullback, or pitch to a tailback. From the time Bryant arrived at Alabama through the 1970 season, the Crimson Tide ran a pro-style offense. By 1969, Bryant began to recruit larger linemen and tailbacks, and after a pair of six win seasons in 1969 and 1970, Bryant saw the success of the wishbone for the Longhorns and decided to implement the offense for the 1971 season. In spring 1971, Alabama assistants Mal Moore and Jimmy Sharpe traveled to Austin where they saw first hand how the wishbone operated during Texas' final week of spring practice.
Links: a. Darrell Royal b. Wishbone formation c. Bud Wilkinson d. Emory Bellard

Output: a

Input: Consider Input: Question: What date was the general election that Llewelyn-Davies ran for the Wolverhampton South-West parliamentary seat held? Passage:Llewelyn-Davies entered the civil service in 1940 and served in the Ministry of War Transport, the Foreign Office, the Air Ministry and the Commonwealth Relations Office. She resigned to contest the Wolverhampton South-West parliamentary seat for Labour during the 1951 general election, but was defeated by the incumbent Conservative Enoch Powell. She subsequently unsuccessfully contested the Wandsworth Central seat in 1955 and 1959, but didn't stand for parliament again. With support of those in the Wilson government and the backing of close friend Richard Crossman, who described her in his diaries as "the real politician" when her husband was elevated to the peerage, she was created a life peer as Baroness Llewelyn-Davies of Hastoe, of Hastoe in the County of Hertfordshire on 29 August 1967. She went on to serve as a Government whip in the House of Lords between 1969 and 1970, and as Opposition Deputy Chief Whip from 1972. In 1973 she was elected Chief Whip, becoming the first woman to take charge of a whip's office in either house. On the return of the Labour Party to government in 1974 she became Captain of the Gentlemen-at-Arms (Government Chief Whip). In 1975, she became a Privy Counsellor. From 1979 to 1982 she was once again Opposition Chief Whip. From 1982 to 1987, she was Principal Deputy Chairman of Committees in the House of Lords, an office carrying with it the role of Chairman of the European Communities Committee.
Links: a. 1951 United Kingdom general election b. Captain of the Honourable Corps of Gentlemen-at-Arms c. Richard Crossman d. 1951 United Kingdom general election
Output: a