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 many pieces had Beethoven composed before the one Pinza performed in 1935? Passage:Pinza sang once again under the baton of Toscanini in 1935, this time with the New York Philharmonic Orchestra, as the bass soloist in performances of Beethoven's Missa Solemnis. One of these performances was broadcast by CBS and preserved on transcription discs; this recording has been issued on LPs and CDs. He also sang in Toscanini's February 6, 1938, NBC Symphony Orchestra's broadcast performance of Beethoven's Ninth Symphony. These performances both took place in Carnegie Hall. In March 1942, Pinza was arrested at his home and unjustly detained 3 months on Ellis Island with hundreds of other Italian-Americans who were suspected of supporting the Axis. The incident was extremely traumatic for Pinza, and he suffered from severe depression for years afterward. In October 1947, he performed the role of Mephistopheles in Guonod's Faust opposite his daughter, soprano Claudia Pinza Bozzolla, as Marguerite at the San Francisco Opera.
Links: a. Symphony No. 9 (Beethoven) b. Missa solemnis (Beethoven) c. Faust (opera) d. San Francisco Opera

Ex Output:
b

Ex Input:
Question: What is the current age of the U.S. Army soldier who were held captive by the Taliban for five years? Passage:Serial is an investigative journalism podcast hosted by Sarah Koenig, narrating a nonfiction story over multiple episodes. The series was co-created and is co-produced by Koenig and Julie Snyder and developed by This American Life. Season one investigated the 1999 murder of Hae Min Lee (Hangul: ), an 18-year-old student at Woodlawn High School in Baltimore. Season two focused on Sergeant Bowe Bergdahl, an American Army soldier who was held for five years by the Taliban, and then charged with desertion. Season three, which debuted in September 2018, explores cases within the Justice Center Complex in the Cleveland area. Serial ranked number one on iTunes even before its debut and remained there for several weeks. Serial won a Peabody Award in April 2015 for its innovative telling of a long-form nonfiction story. As of September 2018, episodes of seasons one and two have been downloaded over 340 million times, establishing an ongoing podcast world record.
Links: a. Cleveland b. Bowe Bergdahl c. Bowe Bergdahl d. Desertion

Ex Output:
b

Ex Input:
Question: How many athletes compete each year in the trials that Power was invited to? Passage:DeStorm comes from Baltimore, Maryland, where he lived with his mother and seven siblings. In 2001 Power moved from Maryland to New York to pursue his music endeavors. After interning and ghostwriting at Atlantic Records, Universal, and various other record labels, Power set out to establish himself as a performer, using YouTube as a platform to share his singing, songwriting, and production skills with the online community. Power's videos are typically comedic, and also often incorporate rapping and beatboxing. He was an accomplished triple jumper and Master personal trainer, and was notably invited to the Olympic Trials. Power appeared as Mr. T in the first season of Epic Rap Battles of History from which he achieved a gold record. In 2008 he lost his mother Mashala to stomach cancer. He moved to Los Angeles, California in 2011 where he joined his manager Sara Pena and started Big Frame, a Multi Channel Network and founded Forefront.TV which focuses on urban lifestyle and music. Power moved on to Paradigm Talent Agency for his acting career then William Morris Endeavor before deciding to go independent. In August 2015, Power hosted the reboot of MTV's Punk'd with co-host King Bach, which aired on BET. He is a founder and President of The Zeus Network which launched July 13, 2018 He's a 2011 American Music Awards honoree and was nominated for five Streamy Awards, winning three. He was Emmy Nominated for Outstanding Actor in a Short Form Comedy or Drama Series in 2018 for his original creation Caught The Series. He also has a son, Tayvion Power.
Links: a. Record producer b. Record label c. United States Olympic Trials (track and field) d. Personal trainer

Ex Output:
c