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: What was the age of Raul Boesel the year that Serra qualified for the 1982 Canadian Grand Prix? Passage:Francisco "Chico" Serra (born 3 February 1957 in São Paulo) is a racing driver from Brazil. He won the 1979 British Formula 3 Championship. He participated in 33 Formula One World Championship Grands Prix for Fittipaldi and Arrows, debuting on 15 March 1981. He made 18 starts, not qualifying for the remaining fifteen races, although he ought to have started as the reserve in the 1982 Swiss Grand Prix. However, Ferrari withdrew Patrick Tambay's entry so late that Serra was not allowed to take part. Serra scored one championship point, for finishing sixth in the 1982 Belgian Grand Prix. After qualifying for the 1982 Canadian Grand Prix, Serra and countryman Raul Boesel had a short scuffle. Serra was furious at Boesel for blocking his last flying lap after waving Keke Rosberg by. Boesel denied that this was intentional. Serra made one CART Champ Car start in 1985 at the Portland International Raceway for Ensign Racing but suffered an engine failure.
 Links: a. Arrows Grand Prix International b. Ensign Racing c. Scuderia Ferrari d. Raul Boesel
Example Output: d

Example Input: Question: Who starred alongside Elijah Wood in the Everything is Illuminated adaptation? Passage:Foer graduated from Princeton in 1999 with a degree in philosophy, and traveled to Ukraine to expand his thesis. In 2001, he edited the anthology A Convergence of Birds: Original Fiction and Poetry Inspired by the Work of Joseph Cornell, to which he contributed the short story, "If the Aging Magician Should Begin to Believe". His Princeton thesis grew into a novel, Everything Is Illuminated, which was published by Houghton Mifflin in 2002. The book earned him a National Jewish Book Award (2001) and a Guardian First Book Award (2002). Foer shared the PEN/Robert W. Bingham Prize with fellow authors Will Heinrich and Monique Truong in 2004. In 2005, Liev Schreiber wrote and directed a film adaptation of the novel, which starred Elijah Wood.
 Links: a. Philosophy b. Liev Schreiber c. Joseph Cornell d. Everything Is Illuminated (film)
Example Output: d

Example Input: Question: Is the city where Pro was born located directly next to a large body of water? Passage:Born in Richmond, California, Pro received an Associate of Arts degree from Contra Costa Community College in 1966, a Bachelor of Arts degree from San Francisco State University in 1968, and a Juris Doctor from Golden Gate University School of Law in 1972. He served in the United States Naval Reserve from 1964 to 1968. After serving as a law clerk to Judge William P. Compton of the Eighth Judicial District Court of Nevada from 1972 to 1973, Pro worked as a deputy public defender in Las Vegas, Nevada from 1973 to 1975. He was an Assistant United States Attorney in Las Vegas from 1975 to 1978. He was in private practice in Reno, Nevada from 1978 to 1979. He was a deputy state attorney general of Nevada from 1979 to 1980. He was the Chief Assistant United States Attorney in Reno in 1980. He served as a United States Magistrate Judge of the United States District Court for the District of Nevada from 1980 to 1987.
 Links: a. Richmond, California b. United States Navy Reserve c. Golden Gate University School of Law d. Nevada
Example Output:
a