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: What country was the DVD filmed in for the July 19, 2003 performance? Passage:The public debut of the song was performed by Mills and Stipe on June 8, 1997, in New York City for the Tibetan Freedom Concert and subsequently released on Tibetan Freedom Concert. Another version recorded on October 27, 1998 for Later with Jools Holland in the BBC Television Centre in London was released as a b-side to "Suspicion" with a recording of "Man on the Moon" from the same performance. The July 19, 2003 performance also appears on the Perfect Square DVD. A version recorded live in-studio at Clinton Studios in New York City on October 7, 2003 was included in the promotional disc A Joyful Noise In Time with R.E.M.; the promo includes several other songs from that session. R.E.M.'s performance from their 2005 Dublin rehearsals was released on the live album Live at The Olympia and their 2008 performance from Austin City Limits appears on R.E.M. Live from Austin, TX.
Links: a. Live at the Olympia (R.E.M. album) b. Austin City Limits c. New York City d. Perfect Square

Ex Output:
d

Ex Input:
Question: How large was Israel's GDP the year Dayan emigrated to that country? Passage:Yosef Dayan emigrated to Israel in 1968, and became a member of the right-wing Kach movement. Dayan is the founder of "Malchut Israel", a right-wing religious-political group in Israel advocating a return of the monarchy. In 2004, he became a member of the newly reconstituted Sanhedrin, a duplicate of the religious tribunal which convened during the time of the Second Temple, a group that had traditionally had seventy-one members. He has also achieved certain notoriety for his alleged central participation in so-called "death curse" ceremonies or Pulsa diNura aimed at Yitzhak Rabin and Ariel Sharon. These curses were presumably to request divine retribution after those former Prime Ministers advocated Israeli withdrawal from certain areas considered by some as inalienable parts of the promised land. Incidentally, Yitzhak Rabin was murdered soon after the first curse, and Ariel Sharon left in a persistent vegetative state after a brain haemorrhage following the second. He is also known to have supported Baruch Goldstein's (a fellow Meir Kahane disciple) terrorist actions in the Cave of the Patriarch's Massacre.
Links: a. Israel b. Ariel Sharon c. Kach and Kahane Chai d. Ariel Sharon

Ex Output:
a

Ex Input:
Question: What army did the 13th Iowa Infantry Regiment fight for during the Civil War? Passage:At the beginning of the Civil War, he became a lieutenant and adjutant of the 13th Iowa Infantry Regiment. He fought at the battle of Shiloh and Corinth. He served as assistant adjutant general in the XVII Corps during the siege of Vicksburg and assistant adjutant general to the Army of the Tennessee during the Atlanta Campaign. He was made a brevet brigadier general for service in the Atlanta Campaign and was assigned to an infantry brigade in the XV Corps during the Carolinas Campaign, but was only lightly engaged in fighting. He rose to the full rank of brigadier general of volunteers (1865), and was made a brevet major general at the close of the same year for gallant and meritorious services during the war.
Links: a. Major general b. Siege of Vicksburg c. 13th Iowa Volunteer Infantry Regiment d. Major general

Ex Output:
c