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: In what city did Harry Newman go to college? Passage:The 1935 NFL Championship Game was held on December 15, 1935, at University of Detroit Stadium (some sources call it Titan Stadium) in Detroit. The game was played in a snowstorm in front of 12,000 spectators. It was the 3rd annual title game for the NFL. The champion of the Western Division was the Detroit Lions (7–3–2) and the champion of the Eastern Division was the New York Giants (9–3). On the opening drive of the game, the Lions Glenn Presnell threw a 36-yard pass to Frank Christensen, and Ace Gutowsky threw another long pass to Ed Klewicki at the Giants' 8-yard line. Gutowsky then ran the ball into the end zone to give the Lions a 7–0 lead. The Lions scored again after Christensen intercepted a pass thrown by New York's Ed Danowski and ran it back to midfield. Three plays later, Dutch Clark ran 40 yards for a touchdown. In the fourth quarter, the Lions blocked a punt, and George Christensen recovered the ball on the Giants' 22-yard line. Ernie Caddel ran the ball in from the one-yard line for the Lions' third touchdown. The Lions added to their lead late in the game after Parker intercepted a pass from New York quarterback (and former University of Michigan star) Harry Newman on the Giants' 45-yard line and returned it to the nine-yard line. Buddy Parker ran for the touchdown as the Lions won the championship by a final score of 26–7.
 Links: a. Detroit Lions b. University of Michigan c. Ed Danowski d. University of Michigan

Ex Output:
b


Ex Input:
Question: How many songs are on the album that "Sometimes" is part of? Passage:Before recording her debut album, Spears had originally envisioned it in the style of "Sheryl Crow music, but younger [and] more adult contemporary". However, the singer agreed with her label's appointment of producers, who had the objective to reach a teen public at the time. She flew to Cheiron Studios in Stockholm, Sweden, where half of the album was recorded the spring of 1998, with producers Max Martin, Denniz Pop and Rami Yacoub, among others. "Sometimes" was written by Jörgen Elofsson, and produced by Per Magnusson and David Kreuger. Spears recorded the vocals for the song in May 1998, at Cheiron Studios in Stockholm, Sweden. It was also mixed at Cheiron Studios by Martin. Esbjörn Öhrwall played the acoustic guitar, while bass guitar was done by Thomas Lindberg. Keyboards and programming was done by Kreuger, and additional keyboards by Magnusson. Background vocals were provided by Anders von Hoffsten. Spears also co-wrote and recorded a track called "I'm So Curious", produced by Eric Foster White, that was released as a B-side to "Sometimes". The track was recorded in 1997 at 4MW East Studios in New Jersey. "Sometimes" was released as the second single from ...Baby One More Time on April 30, 1999.
 Links: a. ...Baby One More Time (album) b. A-side and B-side c. Keyboard instrument d. Sheryl Crow

Ex Output:
a


Ex Input:
Question: In what year did Jim Clark win Formula One championships? Passage:Specific attractions include the world's only complete collection of Vanwall cars, a near-complete collection of McLaren Formula One cars from the team's inception to the early 2000s, and extensive collections of Williams and BRM cars (including examples of both notorious BRM V16-powered machines as well as the H16-powered BRM P83). The collection also has examples of four different four-wheel drive Formula One cars, including an unraced Cosworth car. Another star exhibit is the Lotus 18 with which Stirling Moss won the 1961 Monaco Grand Prix, along with Jim Clark's World Championship-winning Lotus 25. Noticeable, however, is the distinct lack of Ferrari vehicles, 3 in all, but fine examples nonetheless. First being a Ferrari 312 driven by Chris Amon, second a 312B and thirdly, a Ferrari F2000 (The particular chassis driven to victory in the 2000 Canadian Grand Prix, one of nine victories for Michael Schumacher in his maiden championship winning series with Ferrari), conversely, the establishment houses the Jordan 191 in which he made his formula 1 debut in 1991. The 1998 Jordan 198, the most successful in Jordan's history, (the chassis being the one Damon Hill drove to victory in a 1-2 with team mate Ralf Schumacher at the 1998 Belgian Grand Prix at Spa Francorchamps) also figures. Another interesting exhibit is an Auto Union, built from pre-war plans following the factory's destruction by Allied bombing during World War II. Wheatcroft has also supplemented the racing car collection with some additional notable cars, including a replica of the personal Bugatti Royale of Ettore Bugatti.
 Links: a. Allies of World War II b. Four-wheel drive c. Michael Schumacher d. Jim Clark

Ex Output:

d