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.

Ex Input:
Question: Who is the mayor of the city that Delta Connection ended service to on May 1, 2008? Passage:In later years, Continental Express continued to serve the airport with nonstop regional jet flights to Cleveland while Continental Connection was operating nonstop turboprop flights to Albany, NY; however, both services ended in 2005. Spirit Airlines scheduled flights to several Florida cities and Detroit, before moving to LaGuardia Airport in 2001; in May 2008 the airline resumed service to Fort Lauderdale from MacArthur only to drop it soon after. Delta Express, which had nonstops to Orlando and Fort Lauderdale, dropped MacArthur Airport in 2003 after a decline in traffic. Delta Connection regional jet service to Atlanta flown by Atlantic Southeast Airlines (ASA) on behalf of Delta Air Lines ended on May 1, 2008 following a mid-April announcement that Delta and Northwest Airlines were planning to merge – a move that led to changes for the merged airline.
 Links: a. Spirit Airlines b. Delta Air Lines c. Spirit Airlines d. Atlanta

Ex Output:
d


Ex Input:
Question: How old was Thomas Kenan's father when he died? Passage:Thomas Stephen Kenan (February 12, 1838 – December 23, 1911) was a Confederate soldier, and later a politician. His parents were Sarah Rebecca Graham and Owen Rand Kenan; he was the grandson of U.S. Congressman Thomas Kenan and great-grandson of Revolutionary War general James Kenan. He started his education in Duplin County, North Carolina at Old Grove Academy in Kenansville (the town was named for his great-grandfather in 1818). Later he spent a year at Central Military Institute in Selma, Alabama. Thomas spent his freshman year of college at Wake Forest in June. Thomas then transferred his sophomore year to the University of North Carolina, where he would graduate in 1857. He studied law for two years with Judge Pearson at Richmond Hill where he practiced law in Kenansville. After graduation and during the Civil War he became Captain of the Duplin Rifles in the Confederate States Army, elected lieutenant colonel of the 43rd North Carolina Infantry Regiment in April 1862, and was promoted to colonel later that year. He was wounded at the Battle of Gettysburg. While on an ambulance train, he and his older brother James Kenan were both captured; they were then imprisoned on Johnson's Island, Ohio. On March 22, 1865, he was released on parole but never switched sides during the war. On his return home he was elected to the state legislature from 1865 to 1867. Later that year he ran for Congress and lost. Not letting that defeat end his political career, he moved to Wilson, North Carolina, where he became mayor and was elected North Carolina Attorney General, serving from 1877 to 1885. In May 1868 he married Miss Sallie Dortch, but they had no children; Sallie died in 1916.
 Links: a. Owen Rand Kenan b. North Carolina c. North Carolina Attorney General d. Kenansville, North Carolina

Ex Output:
a


Ex Input:
Question: When did the tradition of Anglo-Saxon monks crossing the English Channel on pilgrimage to Rome begin? Passage:Quentovic was a Frankish emporium in the Early Middle Ages that was located on the European continent close to the English Channel. The town no longer exists, but it was thought to have been situated near the mouth of the Canche River in what is today the French commune of Étaples. Archaeological discoveries led by David Hill in the 1980s found that the actual location of Quentovic was east of Étaples, in what is now the commune of La Calotterie. It was an important trading place for the Franks and its port linked the continent to England, specifically to the southeastern county of Kent. From what we know today, Quentovic was founded by a Neustrian king in the early 6th century. It was one of the two most prominent Frankish ports in the north (the other being Dorestad) until it was abandoned, probably in the 11th century. Merchants were drawn to this place because the number of trading posts at the time was limited. Quentovic was also the place where Anglo-Saxon monks would cross the English Channel on their pilgrimage to Rome. A lack of physical evidence, and the sudden disappearance of this emporium, make the town difficult to interpret. Some of the most important historical evidence on Quentovic comes from documents of taxation and especially through the town's minting of coinage. Coins minted during both the Merovingian and the Carolingian dynasties have been found.
 Links: a. English Channel b. Canche c. Anglo-Saxons d. Carolingian dynasty

Ex Output:

c