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: What are the names of the La Quinta Esencia hit singles? Passage:Self-titled debut album WarCry was released on April 17, 2002. Guitarists Pablo Garcia and Fernando Mon appeared only as guest musicians on the debut album, but became full-time members on 2002 along with keyboardist Manuel Ramil and bassist Alvaro Jardon. Second album El Sello De Los Tiempos was released on December 1, 2002. At the end of 2003, Jardon left the band due to musical and personal issues. On January 1, 2004 was released the third album Alea Jacta Est striking all the music stores around Spain. On the first concert of the tour supporting the album, the band presented Roberto Garcia, formerly of Avalanch, as Jardon's replacement. Their fourth studio album, Donde Esta La Luz?, was released on February 1, 2005, considered by critics "their heaviest album to date". They embarked on a supporting tour throughout Spain. WarCry played a sold-concert in Madrid. That performance was released on February 27, 2006 as a live album, named Directo A La Luz and soon was certified gold. La Quinta Esencia was their fifth album, released on September 18, 2006 with a great acceptance by the fans and the press, taking them to the highest positions on the Spanish charts. Sixth album was set to be released on May/June, 2008, but after the lineup changes they pushed it back to September, 2008. Victor Garcia stated that "this album will express much duality in human beings good and evil."
Links: a. Alea Jacta Est b. Spain c. Spain d. La Quinta Esencia

Output: d

Input: Consider Input: Question: How many years were there between the end of the British Burma Campaign and the start of the Battle of Na San? Passage:The First Indochina War had raged, as guerrilla warfare, since 19 December 1946. From 1949, it evolved into conventional warfare, due largely to aid from the communists of the People's Republic of China ("PRC") to the north. Subsequently, the French strategy of occupying small, poorly defended outposts throughout Indochina, particularly along the Vietnamese-Chinese border, started failing. Thanks to the terrain, popular support for August Revolution and support for decolonization from bordering China and the U.S.S.R., the Viet Minh had succeeded in turning a "clandestine guerrilla movement into a powerful conventional army", following asymmetric warfare theory laid by Mao Tse Tung, something which previously had never been encountered by the western colonial powers. In October 1952, fighting around the Red River Delta spread into the Thai Highlands, resulting in the Battle of Na San, at which the Viet Minh were defeated. The French used the lessons learned at Na San strong ground bases, versatile air support, and a model based on the British Burma Campaign as the basis for their new strategy. The Viet Minh, however, remained unbeatable in the highland regions of Vietnam, and the French "could not offset the fundamental disadvantages of a roadbound army facing a hill and forest army in a country which had few roads but a great many hills and forests".
Links: a. China b. On Guerrilla Warfare c. Battle of Na San d. China

Output: c

Input: Consider Input: Question: Where is the person from who Britney Spears was thinking about imitating? Passage:Before recording her debut album, Spears had originally envisioned it in the style of "Sheryl Crow music, but younger [and] more adult contemporary". However, the singer agreed with her label's appointment of producers, who had the objective to reach a teen public at the time. She flew to Cheiron Studios in Stockholm, Sweden, where half of the album was recorded the spring of 1998, with producers Max Martin, Denniz Pop and Rami Yacoub, among others. "Sometimes" was written by Jorgen Elofsson, and produced by Per Magnusson and David Kreuger. Spears recorded the vocals for the song in May 1998, at Cheiron Studios in Stockholm, Sweden. It was also mixed at Cheiron Studios by Martin. Esbjorn Ohrwall played the acoustic guitar, while bass guitar was done by Thomas Lindberg. Keyboards and programming was done by Kreuger, and additional keyboards by Magnusson. Background vocals were provided by Anders von Hoffsten. Spears also co-wrote and recorded a track called "I'm So Curious", produced by Eric Foster White, that was released as a B-side to "Sometimes". The track was recorded in 1997 at 4MW East Studios in New Jersey. "Sometimes" was released as the second single from ...Baby One More Time on April 30, 1999.
Links: a. Cheiron Studios b. Sheryl Crow c. Max Martin d. Acoustic guitar
Output: b