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.

Ex Input:
Question: Did the Phillies win the league championship the year that Roberts won 20 games? Passage:Of those Phillies, 97 have had surnames beginning with the letter R. Two of those players have been inducted into the Baseball Hall of Fame: pitcher Eppa Rixey, who was a Phillie for six seasons in two different stints (19121917, 1919); and Robin Roberts, who won 20 games during the 1950 season as the ace pitcher of the Whiz Kids. The Hall of Fame lists the Phillies as Roberts' primary team; during his career, the right-hander won 234 games and lost 199, the latter one of his three franchise records. During his 14 seasons with the team, he pitched 3,739 innings and completed 272 games, both records; he also held the major league record for most career home runs allowed until it was broken in 2010. Roberts was also elected to the Philadelphia Baseball Wall of Fame as the Phillies' first inductee in 1978.
Links: a. 1950 Philadelphia Phillies season b. 1950 Philadelphia Phillies season c. Winloss record (pitching) d. R

Ex Output:
a

Ex Input:
Question: How many President's children have lived in the White House? Passage:Within weeks, many Americans could recite favorite lines from the record, including "the rubber schwan [swan] is mine", and "move ahead...with great vigah [vigor]", the latter lampooning the President's own words. The album poked fun at Kennedy's PT-109 history; the rocking chairs he used for his painful back; the Kennedy clan's well-known athleticism, football games and family togetherness; children in the White House; and Jackie Kennedy's soft-spoken nature and her redecoration of the White House; and many other bits of knowledge that the public was eager to consume. Kennedy himself was said to have given copies of the albums as Christmas gifts, and once greeted a Democratic National Committee group by saying, "Vaughn Meader was busy tonight, so I came myself." According to UPI reporter Merriman Smith, during a Cabinet meeting Kennedy played the entire record for everyone. At one press conference, Kennedy was asked if the album had produced "annoyment (sic) or enjoyment." He jokingly responded, "I listened to Mr. Meader's record and, frankly, I thought it sounded more like Teddy than it did me. So, now he's annoyed."
Links: a. Child b. Rocking chair c. Sport d. Ted Kennedy

Ex Output:
a

Ex Input:
Question: How many tracks were included on the album recorded live with a radio station? Passage:In Brisbane they soon became known for their unique shows, experimentation and friendliness. After some initial hardships, McSweeney soon found like-minded musicians in Josh Engelking (percussion), Bo Whitton (bass guitar), Ellen Stancombe (violin) and Wayne Jennings (cello). The newly formed lineup soon released the "Rain" single. Based on the single and performances, McSweeney soon began to feature heavily in local media, becoming known for his revolutionary views on music, eccentric interviews/performances and the influence of his colour synesthesia on his music and art. In 2006 the band conducted two extensive national tours, including sets at the coveted Livid and Big Day Out festivals. Following this success, a live performance was recorded with Brisbane community radio station 4ZZZ FM and was released in 2004 as the album The Virgin Mary Australian Tour Acoustic/Strings Album, which received yet more positive feedback. They also headlined the 2004 Valley Fiesta, and played support for Australian singersongwriter Missy Higgins. 2005 saw the band conduct a two-week tour of China, and release the Walls EP with Modern Music/Sony BMG to critical acclaim. The EP received high rotation play on the national Triple J radio station and generated plenty of new fans. The title track, "Walls", entered the stations "Net 50" chart at #3 and charted for fifteen weeks. Sometime around this release bass player Bo Whitton left the band and was replaced by Amanda Holmes.
Links: a. The Virgin Mary Australian Tour Acoustic/Strings Album b. Percussion instrument c. Bass guitar d. Big Day Out

Ex Output:
a