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 often are new issues of the Canadian Journal of Neurological Sciences published? Passage:Multi-dose versions of the vaccine contain the preservative thiomersal (also known as thimerosal), a mercury compound that prevents contamination when the vial is used repeatedly. Single-dose versions and the live vaccine do not contain this preservative. In the U.S., one dose from a multi-dose vial contains approximately 25 micrograms of mercury, a bit less than a typical tuna fish sandwich. In Canada, different variants contain five and 50 micrograms of thimerosal per dose. The use of thiomersal has been controversial, with claims that it can cause autism and other developmental disorders. The U.S. Institute of Medicine examined these claims and concluded in 2004 that the evidence did not support any link between vaccines and autism. Other reviews came to similar conclusions, with a 2006 review in the Canadian Journal of Neurological Sciences stating that there is no convincing evidence to support the claim that thimerosal has a causal role in autism, and a 2009 review in the journal Clinical Infectious Diseases stating that claims that mercury can cause autism are "biologically implausible". The U.K. National Health Service stated in 2003 that "There is no evidence of long-term adverse effects due to the exposure levels of thiomersal in vaccines." The World Health Organization concluded that there is "no evidence of toxicity in infants, children or adults exposed to thiomersal in vaccines". Indeed, in 2008 a review noted that even though thiomersal was removed from all US childhood vaccines in 2001, this has not changed the number of autism diagnoses, which are still increasing.
 Links: a. Thiomersal and vaccines b. Autism c. Canadian Journal of Neurological Sciences d. National Academy of Medicine

Output: c


Input: Consider Input: Question: In what states did Hewit receive advanced degrees? Passage:He graduated from Yale College in 1808. He commenced a course of legal studies in the office of Hon. Lyman Law, of New London, but soon altered his plans. He then taught in the Academy at Plainfield, Conn., and there studied theology with Rev. Joel Benedict, D. D. He was licensed to preach by the New London County Association, Sept. 24, 1811, and supplied several congregations in Vermont and elsewhere. After about six months at the Andover Theological Seminary, in the class of 1814, he was ordained Pastor of the Presbyterian Church in Plattsburg, N. Y., July 5, 1815, and dismissed Oct. 2,1817, being driven southward by the severity of the climate. In Jan. 1818. he was installed over the First Congregational Church in Fairfield, Conn., as successor of Rev. Dr. Heman Humphrey. While in this charge, he became prominent as an able Temperance advocate, and in 1827 he labored extensively in behalf of the American Temperance Society, formed the year before in Boston. In Nov., he was appointed to a three years mission for this Society, and was accordingly dismissed from his pastorate, Dec. 18. His successful efforts during this time, well entitled him to be called the "Luther of the early Temperance Reformation." Dec. 1, 1830, he was installed over the Second Congregational Church in Bridgeport, Conn., a parish adjacent to his former one. The summer of 1831 was spent in England and Paris, on the errand of the Temperance Reform. In 1833, Dr. Hewit (he received the degree of D. D. from Amherst in 1830) was prominent among the founders of the East Windsor Theological Institute, now the Hartford Seminary. In 1853 a difference in his Society, in regard to the course to be taken in procuring assistance for the pastor, resulted in his withdrawal, and the formation of an Old School Presbyterian Church over which he was installed Oct. 31. Here he continued preaching until a colleague was settled, about five years ago.
 Links: a. Plattsburgh (town), New York b. Yale College c. Presbyterianism d. Temperance movement

Output: b


Input: Consider Input: Question: Did Manchester City lose more games than it won the year Billy Walsh died? Passage:William "Billy" Walsh (31 May 1921 – 28 July 2006), also referred to as Willie Walsh, was an Irish footballer. Walsh played for several clubs, but most notably with Manchester City, for whom he made more than 100 appearances. As an international, Walsh represented four national teams: after playing for the England Schoolboys XI, he then became a dual Irish international, playing for both Ireland teams – the FAI XI and the IFA XI. In 1949, he was a member of the FAI XI that defeated England 2–0 at Goodison Park, becoming the first non-United Kingdom team to beat England at home. He then emigrated to New Zealand and also played in an unofficial game for their national team. Walsh eventually moved to Australia and settled in Noosa, Queensland. In 2003, he and several other former Manchester City players returned for the last game at Maine Road. He died on 28 July 2006 at the age of 85 and his ashes were interred at the Garden of Remembrance at the City of Manchester Stadium.
 Links: a. Maine Road b. Manchester City F.C. c. New Zealand national football team d. Ireland national football team (1882–1950)


Output: b