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: How old was Walter's oldest son when Walters passed away? Passage:Walter was born in Kansas City, Missouri, United States, in 1910. His ancestry was German/British on his father's side, and American/British on his mother's side. He was brought to England in 1915, and educated at Westminster School and afterwards in King's College, Cambridge, in 1931. He failed to obtain a research fellowship in Cambridge and so turned to doing basic and applied neurophysiological research in hospitals, in London, from 1935 to 1939 and then at the Burden Neurological Institute in Bristol, from 1939 to 1970. He also carried out research work in the United States, in the Soviet Union and in various other places in Europe. He married twice, had two sons from his first marriage, and one from the second. According to his eldest son, Nicolas Walter, "he was politically on the left, a communist fellow-traveller before the Second World War and an anarchist sympathiser after it." Throughout his life he was a pioneer in the field of cybernetics. In 1970, he suffered a brain injury in a motor scooter accident. He never fully recovered and died seven years later, on May 6, 1977.
 Links: a. Cybernetics b. University of Cambridge c. Nicolas Walter d. Westminster School
Example Output: c

Example Input: Question: Who was older during their time at Sports Fan Radio Network, Pete Rose or Pat O'Brian? Passage:By 1994, SportsFan expanded to a 24/7 format, seven days a week. The signature show, SportsFan Tonight moved its broadcast location from the MGM Grand Las Vegas in 1994. Later it moved to the sportsbook at the Mandalay Bay. The daily line up included baseball's all-time hit leader Pete Rose, as well as a stable of young talent. Others hosting shows over the years included former NFL QB Sean Salisbury, former NFL All-Pro Tim Ryan, Fox and CBS host James Brown, longtime broadcaster Pat O'Brien, former NBA coach Matt Goukas, NHL great Phil Esposito, former NFL All-Pro Bob Golic and former NCAA basketball coaches Bill Frieder and Fran Fraschilla. Other hosts included Bruce Schein, Chris Russo (now Russell), J. T. the Brick, Steve Cofield, Rob Tepper, Chuck Powell, Ryan Williams,Marty Tirrell, Ken Miller, Soren Petro, Rob Fischer, Mike "The Sports Pig" Responts, John Phillips, John Rabe, Brandon Tierney, Jim Brinson, Chad Andrus. Scott Ferrall, Dave Cokin, Eric Pollero, Tim Neverett and others. By the late '90s, SportsFan partnered with CBS Sportsline to broadcast two shows daily. One program was hosted by Craig Carton, the other "The Drive" with Scott Kaplan and Sid Rosenberg. Later they landed a handful of other significant names, including Nanci Donellan (a.k.a. "The Fabulous Sports Babe") from ESPN Radio. Keith Olbermann also hosted a few shows.
 Links: a. Phil Esposito b. Sean Salisbury c. Pete Rose d. Keith Olbermann
Example Output: c

Example Input: Question: What was the name of the coach that Torchetti replaced when hired by Dave Taylor as interim head coach? Passage:Before the 1999–2000 NHL season Torchetti was hired as an assistant coach for the Tampa Bay Lightning under Steve Ludzik. In 2002 Torchetti was hired as head coach of the San Antonio Rampage. Due to his many coaching stints in the city, "Torch" has kept close ties to San Antonio. After 65 games he was promoted to assistant coach with the parent club, the Florida Panthers. In 2004, he served 27 games as interim head coach, replacing Rick Dudley. He finished with a 10–12–4–1 record before being replaced by Jacques Martin. During the 2005–06 NHL season, Torchetti was hired by Dave Taylor as interim head coach of the Los Angeles Kings. With a chance to clinch a playoff spot, he had a 5–7 record in the team's final 12 games and was not retained by the Kings, instead being replaced by Marc Crawford.
 Links: a. Florida Panthers b. 1999–2000 NHL season c. Los Angeles Kings d. Jacques Martin (ice hockey)
Example Output:
c