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 year did Cash record "Big Iron"? Passage:Robbins has been honored by many bands, including the Grateful Dead who covered "El Paso" and Bob Weir & Kingfish who covered "Big Iron". The Who's 2006 album Endless Wire includes the song "God Speaks of Marty Robbins". The song's composer, Pete Townshend, explained that the song is about God deciding to create the universe just so he can hear some music, "and most of all, one of his best creations, Marty Robbins." The Beasts of Bourbon released a song called "The Day Marty Robbins Died" on their 1984 debut album The Axeman's Jazz. Both Frankie Laine and Elvis Presley, among others, recorded versions of Robbins' song "You Gave Me a Mountain", with Laine's recording reaching the pop and adult contemporary charts in 1969. Though Elvis never recorded any of Robbins' songs in the studio, he was a big fan and recorded "You Gave Me a Mountain" live in concert several times; it appeared on 15 Presley albums. Johnny Cash recorded a version of "Big Iron" as part of his American Recordings series, which is included in the Cash Unearthed box set. Cash also recorded other songs by Robbins, including "I Couldn't Keep From Crying", "Kate" and "Song Of The Patriot". He held Robbins in high esteem, having him guest several times on his network TV show. "Big Iron" was also covered by Mike Ness on his album Under the Influences, on which he paid homage to country music artists. The song, originally released on Robbins' 1959 album Gunfighter Ballads and Trail Songs, gained renewed popularity following its use in the video game .
 Links: a. Johnny Cash b. Under the Influences c. Beasts of Bourbon d. Gunfighter Ballads and Trail Songs

Output: a


Input: Consider Input: Question: Which state where Peganum harmala is found is the most populous? Passage:It was first planted in the United States in 1928 in New Mexico by a farmer wanting to manufacture a dye called "Turkish red" from its seeds. From here the plant spread over most of southern New Mexico and the Big Bend region of Texas. An additional spread has occurred from east of Los Angeles in California to the tip of southernmost Nevada. Outside of these regions the distribution in the USA is not continuous and localised. As of 2019 it has been reported in southern Arizona (in at least 3 adjacent counties), northeastern Montana (2 adjacent counties), northern Nevada (Churchill county), Oregon (town of Prineville in the Oregon high desert) and possibly Washington. "Because it is so drought tolerant, African rue can displace the native saltbushes and grasses growing in the salt-desert shrub lands of the Western U.S."
 Links: a. Montana b. Churchill County, Nevada c. New Mexico d. Oregon

Output: c


Input: Consider Input: Question: Did the production of La fille du regiment have more shows at the Royal Opera House or at the Vienna State Opera? Passage:The year 2007 saw Dessay premiering Laurent Pelly's production of La fille du régiment at the London Royal Opera House in January and the Vienna State Opera in April. She performed the title role in Manon at the Liceu in Barcelona in June/July and opened the season at the Metropolitan Opera in the new Mary Zimmerman production of Lucia di Lammermoor. She returned in the same season to sing Lucia again and subsequently reprised in Pelly's production of La fille du régiment. She went on performing Lucia at the San Francisco Opera and a joint concert with tenor Jonas Kaufmann at Le Corum in Montpellier as part of the Festival de Radio France et Montpellier. In October, she sang Manon at the Lyric Opera of Chicago.
 Links: a. Metropolitan Opera b. Festival de Radio France et Montpellier c. Manon d. La fille du régiment


Output: d