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: Who owns the network that the Busy World of Richard Scarry is currently airing on? Passage:The Busy World of Richard Scarry is an American/Canadian/French animated children's television series, produced by CINAR Animation (now known as DHX Media, previously Cookie Jar Entertainment) and France Animation in association with Paramount Television, which aired from 1994 to 1997, first on Showtime, later on Nickelodeon, and ran for 65 episodes. The television series was based on the books drawn and written by Richard Scarry. Reruns of the show formerly aired in syndication as part of the Cookie Jar Kids Network block, but the show now continues to air on the Cookie Jar Toons block on This TV until October 26, 2013. Reruns of the show aired on Qubo from May 13, 2013, to September 25, 2016. However, it returned to Qubo on March 28, 2017, as part of the network's Night Owl block until May 26, 2018, and currently airs on Light TV.
 Links: a. Paramount Television b. Cookie Jar Group c. Light TV d. Children's television series
Example Output: c

Example Input: Question: How many casualties had the Japanese Army suffered by the time Vincent was sent to Tokyo? Passage:Born the son of Colonel Arthur Hare Vincent and Elizabeth Rose Manson and educated at Wellington College and the Royal Military Academy, Woolwich, Vincent was commissioned into the Royal Artillery as a second lieutenant on 24 July 1891. He was promoted to lieutenant on 24 July 1894 and to captain on 13 February 1900. He served with the China Expeditionary Force in late 1900 and then in the Second Boer War in South Africa. Following the end of the war, Vincent left Point Natal for India on the SS Ionian in October 1902 with other officers and men of the J Battery Royal Horse Artillery, and after arrival in Bombay, was stationed in Meerut, Bengal Presidency. In 1903, Vincent was sent to Tokyo to learn Japanese: he served as British military attaché with the Japanese Army during the Russo-Japanese War and, from 1 March 1904, was attached to the 2nd Division of the First Japanese Army in Manchuria.
 Links: a. Imperial Japanese Army b. Second lieutenant c. Second Boer War d. Royal Military Academy, Woolwich
Example Output: a

Example Input: Question: Once a member of the Birmingham Repertory Theatre, what was Derek Jacobi's first action role? Passage:While in the sixth form, he starred in a production of Hamlet, which was taken to the Edinburgh Festival Fringe and very well regarded. At 18 he won a scholarship to the University of Cambridge, where he read history at St John's College and earned his degree. Younger members of the university at the time included Ian McKellen (who had a crush on him—"a passion that was undeclared and unrequited", as McKellen relates it) and Trevor Nunn. During his studies at Cambridge, Jacobi played many parts including Hamlet, which was taken on a tour to Switzerland, where he met Richard Burton. As a result of his performance of Edward II at Cambridge, Jacobi was invited to become a member of the Birmingham Repertory Theatre immediately upon his graduation in 1960.
 Links: a. Trevor Nunn b. Birmingham Repertory Theatre c. Trevor Nunn d. Richard Burton
Example Output:
b