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 deep were their heavy infantry formations normally? Passage:Having recovered from their losses at Trebia (218 BC) and Lake Trasimene (217 BC), the Romans decided to engage Hannibal at Cannae, with approximately 86,000 Roman and allied troops. They massed their heavy infantry in a deeper formation than usual, while Hannibal used the double envelopment tactic and surrounded his enemy, trapping the majority of the Roman army, who were then slaughtered. The loss of life on the Roman side was one of the most lethal single day's fighting in history; Adrian Goldsworthy equates the death toll at Cannae to "the massed slaughter of the British Army on the first day of the Somme offensive in 1916." Only about 15,000 Romans, most of whom were from the garrisons of the camps and had not taken part in the battle, escaped death. Following the defeat, Capua and several other Italian city-states defected from the Roman Republic to Carthage.
Links: a. Cannae b. Adrian Goldsworthy c. Heavy infantry d. City-state

Output: c

Input: Consider 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

Output: a

Input: Consider Input: Question: Of the television shows that Basche had a role in, which had the most seasons? Passage:His first major exposure was starring in Oh Grow Up, a short-lived sitcom created by Alan Ball. He later played the role of Steven Keats for two seasons in the NBC sitcom Three Sisters. He appeared in the 2005 motion picture War of the Worlds in the role of Tim, the stepfather of Dakota Fanning and Justin Chatwin's characters. In 2006 he played Todd Beamer in United 93. David landed the lead role in 2007's I'll Believe You, a family-friendly sci-fi comedy. In 2008 he was "Mike Harness" in Lipstick Jungle on NBC for two seasons, and simultaneously played "Kenny Kagan" on The Starter Wife on USA. In 2010 he guest starred on , White Collar, and The Mentalist. He appeared in the film Sex and The City 2 as a guest at the wedding. Basche had a small role in the 2017 mystery film The Vanishing of Sidney Hall.
Links: a. White Collar (TV series) b. Alan Ball (screenwriter) c. War of the Worlds (2005 film) d. Oh, Grow Up
Output: d