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: How many years was Taft president? Passage:Howard was born to Ossian Gregory Howard, a lawyer, and Lucy Denham Thurber on 11 June 1857. His relatives from his mother's side included the Harvard astronomer E.C. Pickering while other distant relatives included Senator J.M. Howard and President William Howard Taft. Shortly after his birth, the family moved from Rockford, to Ithaca, New York where his father worked with a law firm. Howard attended Ithaca Academy. An interest in insect collecting encouraged by his parents with the gift of The Butterfly Hunters by Mary Treat at the age of 10 followed by more books and at the age of 13, along with another collector friend, recorded the introduction of the European cabbage butterfly (Pieris rapae) in the Catskill region. Along with his friends, he founded the Ithaca Natural History Society to meet and discuss papers and insects. While out collecting one day, he met John Henry Comstock, who invited him to his lab at Cornell University. Howard enrolled in Cornell in September 1873, three years after the death of his father, and following the advice of his mother's friends, went to study civil engineering. Doing poorly in differential calculus made him drop engineering and he began to study other subjects including French, German, and Italian. He then joined Comstock's lab as the first research student and graduated in June 1877 with a thesis on respiration in the larva of Corydalis cornutus. He worked with Burt Green Wilder and Simon Henry Gage and received a masters at Cornell. In the 1880s, he also attended Columbian College (now George Washington University) for medicine, although he didn't complete it. He however received an honorary MD from the same university in 1911 for his contribution to medical entomology. 
 Links: a. William Howard Taft b. Rockford, Illinois c. John Henry Comstock d. Pieris rapae

Ex Output:
a


Ex Input:
Question: On what date did Recitation win its maiden race at Newbury Racecourse? Passage:After finishing third over five furlongs on his racecourse debut, Recitation won a maiden race over the same distance at Newbury Racecourse, beating I'll See You by half a length. The colt was then moved up sharply in class for the Group Three Coventry Stakes over six furlongs at Royal Ascot in June in which he was ridden by Greville Starkey and started at odds of 11/1. In a performance which Timeform described as "a revelation", Recitation took the lead a quarter mile from the finish and drew clear of the field to win easily by five lengths from Motavato, Bel Bolide and Another Realm. The form of the race was subsequently boosted when the third and fourth placed horses won the Gimcrack Stakes and the Richmond Stakes respectively. In the July Stakes at Newmarket Racecourse Recitation started 2/5 favourite against two opponents, but was beaten two and a half lengths by Age Quod Agis.
 Links: a. Greville Starkey b. Newbury Racecourse c. Bel Bolide d. Maiden race

Ex Output:
d


Ex Input:
Question: Were the movies that Beck starred in released in the same year? Passage:Beck was born to the actress Cindy Robbins. She starred in such movies as Massacre at Central High, Roller Boogie, and . Among her notable television credits are  General Hospital, Capitol (billed as Kimberly Beck-Hilton), Fantasy Island, Buck Rogers in the 25th Century (as one side of a Jekyll-and-Hyde character, whose counterpart was played by Trisha Noble), Westwind, The Brady Bunch, Dynasty, Lucas Tanner and Peyton Place (as the character Kim Schuster). As a child, she appeared in Alfred Hitchcock's Marnie and television commercials for such products as Mattel Toymakers Barbie and Chatty dolls. She had a very brief appearance on The Munsters as a transformed Eddie Munster after Eddie drank the rest of Grandpa's Texas Playgirl Potion in season 1, episode 33 entitled "Lily Munster, Girl Model". She starred on the pilot episode of Eight Is Enough as Nancy Bradford, the role that, in the series, went to Dianne Kay. She also had the role of Diane Porter in Rich Man, Poor Man Book II with Peter Strauss and appeared in a host of other well-received television miniseries productions. In 1968, she and her stepfather Tommy Leonetti, then working in Australia, recorded the single "Let's Take a Walk", released under the name of "Tommy Leonetti and his daughter Kim". It charted at #4 on the Melbourne charts.
 Links: a. Massacre at Central High b. Fantasy Island c. Peyton Place (TV series) d. Roller Boogie

Ex Output:

a