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 the person George studied with at University of Michigan when George attended Muhlenberg College? Passage:At age 17 Miller began school-teaching to raise funds for higher education. In 1882 he entered Franklin and Marshall Academy, and progressed to Muhlenberg College in 1884. He received his B.A. in 1887 and M.A. in 1890. While a graduate student, Miller was Principal of schools in Greeley, Kansas and then professor of mathematics as Eureka College in Eureka, Illinois. He corresponded with Cumberland University in Lebanon, Tennessee for his Ph.D. in 1892. He then joined Frank Nelson Cole at University of Michigan and began to study groups. In 1895 he went to Europe where he heard Sophus Lie lecture at Leipzig and Camille Jordan at Paris. In 1897 he went to Cornell University as an assistant professor, and in 1901 to Stanford University as associate professor. In 1906 he went to University of Illinois where he taught until retirement in 1931.
 Links: a. Cumberland University b. Frank Nelson Cole c. Frank Nelson Cole d. Frank Nelson Cole

Ex Output:
b


Ex Input:
Question: What version of iOS was current the year Bejeweled 2 was released on the platform? Passage:Bejeweled 2 is a tile-matching puzzle video game. The sequel to Bejeweled, it was developed and published by PopCap Games. In 2004, Bejeweled 2 Deluxe was released, which includes extra game modes and features. Bejeweled 2 Deluxe was released for the Xbox 360 as a downloadable Xbox Live Arcade game on November 22, 2005. In 2007, the game was released on the PlayStation 2 alongside another PopCap game, AstroPop as a two-game compilation pack as PopCap Hits! Volume 1. PopCap also released a version for iOS in 2008. Bejeweled 2 was also released for PlayStation 3 on the PlayStation Network on January 29, 2009, on the Wii via WiiWare on June 14, 2010, and on PlayStation Portable on June 29, 2010, and for Android. As with the original Bejeweled, Bejeweled 2 is based on the Shariki game mechanic.
 Links: a. Xbox Live Arcade b. Shariki c. Ios d. PlayStation 3

Ex Output:
c


Ex Input:
Question: How old was James Illingworth's replacement as Commander when he took that position? Passage:Educated at Wellington College, Berkshire, and the University of Leicester, Illingworth was commissioned into the Army Air Corps in 1989. He became commanding officer of No. 657 Squadron AAC in August 2001 and went on to be a staff officer in the Directorate of Joint Commitments at the Ministry of Defence in 2003, Deputy Commander, Joint Helicopter Command in December 2010 and senior military attaché at the British Defence Staff – US in Washington, D.C. in August 2013. He then became Deputy Commander, 1st (United Kingdom) Division in August 2016 and Commander, British Forces Cyprus in February 2017. llingworth was replaced by Major General Robert Thomson on 25 September 2019. Illingworth was appointed Director Land Warfare Centre in October 2019.
 Links: a. 1st (United Kingdom) Division b. Robert Thomson (British Army officer) c. Joint Helicopter Command d. University of Leicester

Ex Output:

b