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 countries signed the treaty that acknowledges Ireland's "traditional policy of military neutrality"? Passage:Ireland has been neutral in international relations since the 1930s. The nature of Irish neutrality has varied over time, and has been contested since the 1970s. Historically, the state was a "non-belligerent" in the Second World War (see Irish neutrality during World War II) and has never joined NATO, although during the Cold War it was anti-communist and aloof from the Non-Aligned Movement. The compatibility of neutrality with Ireland's membership of the European Union has been a point of debate in EU treaty referendum campaigns since the 1990s. The Seville Declarations on the Treaty of Nice acknowledge Ireland's "traditional policy of military neutrality", reflecting the narrow formulation of successive Irish governments. Others define Irish neutrality more broadly, as having "a strong normative focus, with a commitment to development, United Nations peacekeeping, human rights and disarmament".
 Links: a. Republic of Ireland b. Seville Declarations on the Treaty of Nice c. Neutral country d. Seville Declarations on the Treaty of Nice
Example Output: b

Example Input: Question: Who was governor of the state in which Moore studied law in 1856? Passage:He was born in Lewisburg, Virginia in a portion of the state along the Ohio River which became West Virginia in his lifetime. His father had been born in Shenandoah County and moved across the Appalachian Mountains to the Greenbrier County area, but died when Charles was an infant. His paternal grandfather had married a daughter of Joseph Morgan, who helped settle the trans-Appalachian area. His mother, Augusta Delphia Page of Staunton, Virginia, a daughter of Major Charles Page, died in 1844 so Charles and his sister were raised by their uncle, George Moore in Mason County. When Charles was 16, he was sent to Marshall Academy in Huntington, and he would also study with John I Van Meter in Pike County, Pennsylvania, then attend Jefferson College (which later became Washington and Jefferson College) in Canonsburg, Pennsylvania. While at Jefferson College, Charles Moore helped found the Phi Kappa Psi fraternity before graduating in 1853. Moore then briefly attended Union College in New York. Returning to Virginia, he studied law at the University of Virginia and completed the course in 1856.
 Links: a. Washington & Jefferson College b. Staunton, Virginia c. Virginia d. Mason County, West Virginia
Example Output: c

Example Input: Question: How old was Bonham the year he earned his bachelor's degree? Passage:Thomas Bonham had been admitted to St John's College, Cambridge, in 1581. Earning a bachelor's degree in 1584, he completed a master's by 1588 and studied for a medical doctorate at Cambridge, which was later granted by the University of Oxford. By 1602, he had completed his studies and moved to London, where he practised medicine and associated himself with the Barber-Surgeons' Company, campaigning for it to be allowed to authorise medical practitioners in a similar way to the College of Physicians. Apparently giving up after a failed petition to Parliament in 1605, Bonham petitioned to join the college on 6 December 1605 but was rejected and told to return after further study. Returning on 14 April 1606, he was again told he could not join and was fined £5 () and threatened with imprisonment for continuing to practise. Bonham still kept working as a doctor; on 3 October it was announced he was to be arrested and fined £10. Bonham again appeared before the college, now with a lawyer, on 7 November. He announced that he would continue to practise without seeking the college's permission, which he claimed had no power over graduates of Oxford or Cambridge. He was then imprisoned (some say at Fleet Prison, and some say at Newgate Prison) for contempt, but his lawyer had a writ of habeas corpus, issued by the Court of Common Pleas, which freed him on 13 November.
 Links: a. London b. Royal College of Surgeons of England c. Thomas Bonham (physician) d. Bachelor's degree
Example Output:
c