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 is the seating capacity of the place where the Saracens defended their title in April 2017? Passage:Deysel signed a two-year contract to join Japanese side Toyota Verblitz at the conclusion of the 2014 Super Rugby season. On 16 March 2017, it was announced that Deysel had joined Irish Pro12 side Munster on a three-month loan as injury cover for his compatriot Jean Kleyn. On 8 April 2017, Deysel made his debut for Munster when he started against Scottish side Glasgow Warriors in a 201617 Pro12 fixture. Munster won 107, with Deysel being replaced by Peter O'Mahony in the 42nd minute. On 22 April 2017, Deysel made his European debut when he replaced Tommy O'Donnell in Munster's 201617 semi-final defeat at the hands of defending champions Saracens in the Aviva Stadium, Dublin. On 27 May 2017, Deysel made his final appearance for Munster when he came off the bench against Scarlets in the 2017 Pro12 Grand Final. Following the completion of his loan spell at Munster, Deysel was granted an early release from his Sharks contract and signed a two-year deal with another Irish province, this time moving to Ulster. Ulster announced on 24 October 2018, Deysel would retire from professional rugby with immediate effect.
Links: a. Aviva Stadium b. Aviva Stadium c. Dublin d. Ulster Rugby
Example Output: a

Example Input: Question: How old was Derow's teacher and lasting influence at Oxford when Derow graduated from Oxford? Passage:Born in Newport, Rhode Island, Derow obtained his secondary education at The Roxbury Latin School in West Roxbury, Massachusetts. After an A.B. degree at Amherst (with Peter K. Marshall), he read for Greats as a second B.A. degree at Oxford in 19651967, achieving a First. At Oxford he was taught by, among others, W. G. (George) Forrest, who was a lasting influence. He completed a Ph.D. at Princeton on 'Rome and the Greek world from the earliest contacts to the end of the first Illyrian war', for which Professor J. V. A. Fine was his Advisor; in the preface to that work, he acknowledges the additional inspiration he had drawn from T. J. Luce and the historian and epigrapher C. Bradford Welles. After a spell of teaching at the University of Toronto, he returned to succeed Forrest at Wadham in 1977 when the latter was elected to the Wykeham Professorship of Ancient History at New College. In 20022005 Derow was also Director of Graduate Studies in ancient history for the Oxford Faculty of Classics.
Links: a. George Forrest (historian) b. Roxbury Latin School c. Roxbury Latin School d. Princeton University
Example Output: a

Example Input: Question: How long is the river in San Antonio where Jones drove cotton carrying wagon along the river? Passage:Walter "Wiley" Jones was born in Madison County in northeastern Georgia, on July 14, 1848. His parents were George Jones, a white planter, and Jones' slave, Anne, who had six children by George Jones: Matthew (who superintended the construction of the Wiley Jones Street Car Line), Thomas, Julia (wife of Ben Reed), Wiley, Taylor, and James (who managed many of Wiley's businesses). Wiley received his nickname because of his mischievous nature. At the age of five, he moved to Arkansas with his master and more than forty fellow slaves. They settled on the Governor Byrd plantation. George Jones died in 1858. Anne was called his wife in an 1889 biography of Jones, and she believed that George had promised to free herself and her children upon his death, but no manumission papers were found, and the family was kept as slaves and sold by the estate administer, Peter Finerty, to James Yell, a lawyer and planter in Pine Bluff. Jones worked as a houseboy and carriage driver for his new master. When Jones was ten, he was given to Yell's only son, Fountain Pitts Yell, on the occasion of Pitts Yell's marriage. Pitts was a state representative from 1860 to 1861. During the American Civil War, James Yell became a Major General of the Arkansas State Militia, and Pitts became a colonel in Company S of the 26th Arkansas Infantry Regiment in the Confederate Army. James Yell's was transferred to the Confederate States Army in the summer of 1861, and James left the service and moved to Texas. Jones served for Pitts during the war until Pitts' death in 1864 at the Battle of Pleasant Hill in Louisiana. Jones then joined James Yell and his family in Waco, Texas. There, he served as a porter in a mercantile house for one year. He was then hired to drive a wagon carrying cotton on a route along the Brazos River to San Antonio.
Links: a. Battle of Pleasant Hill b. Louisiana c. Brazos River d. Texas
Example Output:
c