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 long did the war that Potter fought in as an officer in the Royal Field Artillery last? Passage:Potter was born in Bedford to Reverend Brignal Peel, a Wesleyan minister, and Elizabeth Stimson. He was educated at Bedford Modern School and for a time at Worcester College, Oxford. He first performed in E. M. Royle's The White Man at the Lyric Theatre in London before touring. In 1915 he was George Robey's understudy at the Alhambra. During the Great War Potter served as a 2nd lieutenant in the Royal Field Artillery in France. He served in the 6th Division 2nd Brigade 21st Battery, from 8 February 1917 before returning to music hall once the war was over. Potter cultivated an individual style and persona, wearing a straw boater, wide grey flannel trousers (he said he invented the Oxford bags style at the Coliseum in 1920), an 'Old Borstolian' blazer and carrying a notebook with a rolled umbrella. James Agate described him as "that sham Harrovian who bears upon his blazer the broad arrows of a blameful life".
 Links: a. Harrow School b. World War I c. Lyric Theatre, London d. World War I

Output: b


Input: Consider 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 (1912–1917, 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. Win–loss record (pitching) d. R

Output: a


Input: Consider Input: Question: Who was the head coach of the team that drafted Armour, at the time he was drafted in 1999? Passage:He was drafted by the Oakland Raiders in 1999 and was later signed by the Cincinnati Bengals in December 1999. Armour started for the Bengals in 2001 and 2002 and was released by them in August 2003. In June 2004 Armour was signed as a free agent by the British Columbia Lions and played for them in 2004 and 2005. After the 2005 season Armour was signed by the Hamilton Tiger-Cats and played for them in the 2006 and 2007 seasons. In February 2008 he was signed by the Calgary Stampeders. He helped Calgary win the 2008 Grey Cup. He was later released on June 22, 2009 for overaggressive plays during training camp. On August 3, 2009, the BC Lions re-signed Armour. On February 25, 2010, Armour announced his retirement after six seasons in the CFL, having spent three with the BC Lions.
 Links: a. Cincinnati Bengals b. Oakland Raiders c. BC Lions d. Oakland Raiders


Output: b