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: How old was Sophie Okonedo the year that she appeared as Liz 10, in the episodes "The Beast Below" and "The Pandorica Opens"? Passage:Although Scream of the Shalka continues the narrative of the original 1963–89 programme and the 1996 television film, the show's 2005 revival ignored its events. The series was scripted by veteran Doctor Who writer Paul Cornell, with Richard E. Grant providing the voice for the Ninth Doctor. This performance followed years of rumours that Grant would play the Doctor in a film or new series, and indeed he had appeared as the "Conceited Doctor" in the Comic Relief special Doctor Who and the Curse of Fatal Death in 1999. Grant subsequently went on to appear in the revived television series of Doctor Who as a guest villain in 2012's "The Snowmen" and 2013's "The Bells of Saint John" and "The Name of the Doctor". The Doctor's companion for this adventure, Alison Cheney, was voiced by Sophie Okonedo who a year later would be nominated for an Academy Award for her performance in Hotel Rwanda. She also appeared in the 2010 series of Doctor Who, as Liz 10, in the episodes "The Beast Below" and "The Pandorica Opens". Derek Jacobi reprised his role as the Master in 2007's "Utopia". David Tennant appeared in a cameo role as the Caretaker, later being cast as the Tenth Doctor in 2005.
 Links: a. Tenth Doctor b. Sophie Okonedo c. The Pandorica Opens d. Utopia (Doctor Who)

Ex Output:
b


Ex Input:
Question: In what Kentucky county did Robert Mallory die? Passage:Born in Madison Court House, Virginia, Mallory attended private schools and graduated from the University of Virginia in 1827. He engaged in agricultural pursuits in La Grange, Kentucky, studied law and was admitted to the bar in 1837, commencing practice in New Castle, Kentucky. He was elected an Opposition and later Unionist to the United States House of Representatives in 1858, serving from 1859 to 1865, being unsuccessful for reelection in 1864. There, Mallory served as chairman of the Committee on Roads and Canals from 1859 to 1863. He was a delegate to the National Union Convention in 1866 and was one of the vice presidents of the Centennial Exposition in 1876. He resumed agricultural pursuits until his death near La Grange, Kentucky on August 11, 1885. He was interred in Spring Hill Family Cemetery in Ballardsville, Kentucky.
 Links: a. Centennial Exposition b. 1866 National Union Convention c. La Grange, Kentucky d. Centennial Exposition

Ex Output:
c


Ex Input:
Question: Which of the two Texas stations that continued to broadcast Lauck and Goff began airing programs the earliest? Passage:When the Quaker contract expired, Lauck and Goff continued to broadcast on two Texas stations, WBAP (Fort Worth) and WFAA (Dallas). In 1933, The Ford Dealers of America became their sponsor for approximately a year. Horlicks Malted Milk, the 1934–37 sponsor, offered a number of promotional items, including almanacs and fictional Pine Ridge newspapers. During this period, the show was broadcast on Chicago's WGN (AM), one of the founding members of the Mutual Broadcasting System. Effective July 1, 1935, the program was also carried on WLW (Cincinnati, Ohio), KNX (Los Angeles, California), and KFRC (San Francisco, California). Along with The Lone Ranger, Lum and Abner was one of Mutual's most popular programs. In 1936, Dick Huddleston of Waters petitioned the United States Post Office to change the town's name to Pine Ridge. Postum cereal sponsored Lum and Abner in 1938–40, before Alka-Seltzer picked up the duo. Miles Laboratories, manufacturers of Alka-Seltzer and One-A-Day Vitamins, became the longest-running sponsor, backing the program from 1941 until 1948. Over the course of its life, Lum and Abner appeared on all four major radio networks: NBC, Mutual, CBS and ABC (formerly NBC Blue).
 Links: a. Blue Network b. Postum c. American Broadcasting Company d. WBAP (AM)

Ex Output:

d