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.

Example Input: Question: What other artists collaborated on the soundtrack DJ Quik worked on shortly before his friend Mausberg died? Passage:In 1998 Quik released Rhythm-al-ism his fourth studio album on Profile Records. This record was certified Gold in 1999, and contained the singles "Hand in Hand (featuring 2nd II None and El Debarge) and "You'z A Ganxta." It featured guest appearances by Nate Dogg, Snoop Dogg, AMG and Suga Free. That year he went on to produce for The Luniz, Shaquille O'Neal, Deborah Cox and Jermaine Dupri. He also produced on The Kingdom Come by rapper King Tee which ultimately never came out due to label problems. He also faced personal and professional tragedy when his nephew murdered his close friend and protégé Darryl Cortez Reed in 1998. In 1999, there was the release of Classic 220 by 2nd II None, in which Quik played a huge part. Production on Gap Band's Y2K: Funkin' Till 2000 Comz album, Snoop Dogg's No Limit Top Dogg,  and Deep Blue Sea (soundtrack). This was compounded by the death of another friend and rapper Mausberg, subsequently murdered in 2000. That year, saw the release of rapper Mausberg's album, and DJ Quik's Balance & Options. Also production with Whitney Houston, Erick Sermon, 8Ball & MJG, Xzibit and AMG.
 Links: a. Deep Blue Sea (soundtrack) b. Deborah Cox c. Xzibit d. Snoop Dogg
Example Output: a

Example Input: Question: Which of the regiments that Ellwood served in was the largest? Passage:Ellwood graduated from Duntroon in 1990 and was commissioned into the Royal Australian Infantry Corps. His early career included postings as a platoon commander in the 2nd/4th Battalion, Royal Australian Regiment and as an instructor in field training and tactics at Duntroon, before he was seconded to the British Army from 1998 for a two-year exchange with the Irish Guards, then stationed in Germany. During the secondment he deployed as part of the NATO intervention in the Kosovo War in 1999, serving as second-in-command of an armoured infantry company in the King's Royal Hussars Battle Group. For his service in Kosovo, Ellwood was awarded a Commander British Forces Commendation. He returned to Australia as a company commander and operations officer in the 5th/7th Battalion, Royal Australian Regiment (5/7RAR). Ellwood commanded B Company on operations in East Timor from October 1999 to April 2000, when 5/7RAR deployed with the International Force East Timor.
 Links: a. 2nd/4th Battalion, Royal Australian Regiment b. Kosovo War c. 2nd/4th Battalion, Royal Australian Regiment d. King's Royal Hussars
Example Output: a

Example Input: Question: Who directed the film which inspired Khalifa's song "The Kid Frankie"? Passage:On the song "The Kid Frankie", Khalifa raps over the English R&B band Loose Ends' No. 1 hit single, "Hangin' on a String" (1985). Khalifa stated that the song was inspired by the character Frankie from the film The Business (2005), who listens to Loose Ends while traveling around Spain. The song "Never Been" samples "Schala's Theme" from the soundtrack to the video game Chrono Trigger with its soundtrack composed by Yasunori Mitsuda. The song "Up", samples Tevin Campbell's "Could It Be". "In the Cut" samples "Let Go" by Frou Frou from the end credits of the film Garden State, the song "We're Done" samples the single "Our Time Is Here" by Demi Lovato from the Disney soundtrack Camp Rock. The song "Visions" contains a sample from "Huit Octobre 1971" by Cortex. "Spotlight" sampled "Theme from the Planets" by Dexter Wansel, from his album "Life on Mars" (1976) and "Still Blazin" samples Alborosie's song of the same name.
 Links: a. The Business (film) b. Garden State (film) c. Dexter Wansel d. Frou Frou (band)
Example Output:
a