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: Was Chevon Walker born in the Caribbeans?  Passage:Chevon Walker (born May 9, 1987 in Montego Bay, Jamaica) is a former professional Canadian football running back and kick returner for the Winnipeg Blue Bombers of the Canadian Football League. He played NCAA football for the Sioux Falls Cougars. He played two years of his career as a professional football player in the Canadian Football League for the Hamilton Tiger-Cats. In 2014, the Ottawa Redblacks selected him in the expansion draft. He started the 2015 season with the Ottawa Redblacks before he was released on August 28, 2015. On September 1, 2015, it was announced that Walker had signed with the Winnipeg Blue Bombers. Chevon Walker has over 1000 rushing yards and seven touchdowns in three years of professional play.
 Links: a. Hamilton Tiger-Cats b. Winnipeg Blue Bombers c. Canadian Football League d. Montego Bay
Example Output: d

Example Input: Question: To what city did the team that Olsen played with later move? Passage:Merlin Jay Olsen (; September 15, 1940 – March 11, 2010) was an American football player, announcer, and actor. He played his entire 15-year professional football career in National Football League (NFL) as a defensive tackle with the Los Angeles Rams. He was selected to the Pro Bowl a record 14 straight times, missing selection only in the last year of his career. This record of 14 seasons selected to play in the Pro Bowl, consecutive or otherwise, is shared with current New England Patriots quarterback Tom Brady, former offensive lineman Bruce Matthews, former tight end Tony Gonzalez, and former quarterback Peyton Manning. A recipient of the 1961 Outland Trophy as the best lineman in college football, Olsen is a member of the Pro Football Hall of Fame and the College Football Hall of Fame. As an actor, he portrayed farmer Jonathan Garvey on Little House on the Prairie. After leaving that series, he starred in his own NBC drama, Father Murphy.
 Links: a. NBC b. Los Angeles Rams c. Tom Brady d. American football
Example Output: b

Example Input: Question: How many states did Tates teach college law in? Passage:Tatel received his Bachelor of Arts degree from the University of Michigan and his Juris Doctor from the University of Chicago Law School. Following law school, he served as an instructor at the University of Michigan Law School and then joined Sidley Austin in Chicago. Since then, he served as founding director of the Chicago Lawyers' Committee for Civil Rights Under Law, Director of the National Lawyers' Committee for Civil Rights Under Law, and Director of the Office for Civil Rights of the United States Department of Health, Education, and Welfare during the Carter Administration. Returning to private practice in 1979, Tatel joined Hogan & Hartson, where he founded and headed the firm's education practice until his appointment to the D.C. Circuit. While on sabbatical from Hogan & Hartson, Tatel spent a year as a lecturer at Stanford Law School. He also previously served as Acting General Counsel for the Legal Services Corporation.
 Links: a. Sidley Austin b. Chicago c. University of Michigan Law School d. University of Michigan Law School
Example Output:
c