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 old was the Cardinals right fielder when he retired? Passage:The new season brought a Cardinals team that was much changed from the one that went 100-62 in 2005 but fell to the Houston Astros in the NLCS. Starting pitcher Matt Morris, second baseman Mark Grudzielanek, left fielder Reggie Sanders, and relief pitcher Julián Tavárez left the team via free agency. Relief pitcher Ray King was traded to Colorado. Right fielder Larry Walker retired. Brought in to replace the departed Cardinals were right fielder Juan Encarnación, starting pitcher Sidney Ponson, relief pitchers Braden Looper and Ricardo Rincón, all via free agency, and second baseman Aaron Miles, acquired in the Ray King trade. Left field was left unsettled in the offseason and would remain so all year, with no player getting more than one-third of the playing time at that position.
 Links: a. Julián Tavárez b. Larry Walker c. Reggie Sanders d. Larry Walker

Output: b


Input: Consider Input: Question: How long was Ron Hughes Commander? Passage:Dunstan was then posted to the 1st Battalion, Royal Australian Regiment (1 RAR) as second-in-command in 1953. He then saw service in Korea including a period as Military Assistant to the Commander in Chief of the British Commonwealth Forces Korea, and was appointed a Member of the Order of the British Empire in the 1954 New Year Honours. Between May 1964 and February 1965, Dunstan commanded 1 RAR, before later holding an appointment at the 1st Recruit Training Battalion. Having reached the rank of colonel, in early 1968 he was deployed to Vietnam as deputy commander of the 1st Australian Task Force (1 ATF). He took over from Brigadier Ron Hughes as Commander of the 1 ATF on 21 May 1968 during the Battle of Coral–Balmoral. For his services during this battle, he was appointed a Commander of the Order of the British Empire in 1969.
 Links: a. 1st Battalion, Royal Australian Regiment b. Order of the British Empire c. Brigadier d. 1954 New Year Honours

Output: b


Input: Consider Input: Question: Who was the manager of Manchester United when Duncan Edwards died as a result of the Munich air disaster? Passage:The most famous former resident of the Priory Estate is Duncan Edwards, who was born two miles away at Holly Hall but moved to 31 Elm Road as a small child and went on to play 18 times for England as well as winning two Football League championships with Manchester United before he died in 1958 at the age of 21 from injuries sustained in the Munich air disaster. As a child, he had attended Priory Primary School and then Wolverhampton Street School. The school is most famous for being the former school (1941 to 1948) of the late Duncan Edwards, the former Manchester United and England footballer. He died aged 21 as a result of the Munich air disaster in 1958. After his death, a stained glass window was dedicated to Edwards at St Francis parish church at the junction of Laurel Road and Poplar Crescent. The church was founded during 1931 and originally based at Priory Hall before the church building on the newly developed housing estate was opened on 10 May 1932.
 Links: a. Munich air disaster b. Duncan Edwards c. Wolverhampton Street School d. Duncan Edwards


Output: b