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: When was the college founded where Beloff earned a degree in chemistry? Passage:Anne Beloff was born in 1921 in Hampstead to Simon Beloff and Marie Katzin. Her parents were of Russian–Jewish background, and her siblings included the historian Max Beloff, Baron Beloff, the psychologist John Beloff, the journalist Nora Beloff, and the politician Renee Soskin. She earned a degree in chemistry from University College London in 1942 before completing a PhD in the biochemistry of skin burns with Rudolph Peters at the University of Oxford. She visited Harvard Medical School in 1946 to perform research and returned to the UK in 1948. In the same year she married Ernst Boris Chain, a biochemist who had won the Nobel Prize in Physiology or Medicine in 1945, and moved with him to Rome.
 Links: a. Max Beloff, Baron Beloff b. University College London c. Ernst Chain d. Nora Beloff
Example Output: b

Example Input: Question: Who starred in Houston's first film? Passage:Houston took acting classes and received her first role in the 1975 made-for-television film Death Scream. In that same year Sheffield Lab released "I've Got the Music in Me" a Direct to disc recording by Thelma Houston and Pressure Cooker that went on to become a benchmark vinyl recording for audiophiles. The following year she recorded songs for the soundtrack of the film The Bingo Long Traveling All-Stars & Motor Kings starring Billy Dee Williams and James Earl Jones. In 1975 Houston appeared on the Golden Globe Award broadcast performing the nominated song "On & On" and also was featured in a tribute to Berry Gordy on that year's American Music Award broadcast singing "You've Made Me So Very Happy". That year Houston's version of "Do You Know Where You're Going To" was being set for single release when it was pulled and the song given to Diana Ross to serve as the theme song for the movie Mahogany. In 1976 Houston sang backing vocals for Motown labelmate Jermaine Jackson on his album My Name Is Jermaine.
 Links: a. Direct-to-disc recording b. James Earl Jones c. Death Scream d. James Earl Jones
Example Output: c

Example Input: Question: How old is the guitarist who stood in for Becker during the tour? Passage:Roth hired 19-year-old guitar virtuoso Jason Becker to replace Vai prior to recording his third solo LP, A Little Ain't Enough. A straight-ahead hard rock album produced by Bob Rock (who had just produced Metallica's self-titled album), A Little Ain't Enough achieved RIAA gold status shortly after its January 1991 release. Before starting a support tour for A Little Ain't Enough, Becker was diagnosed with Lou Gehrig's disease, rendering him unable to perform onstage. Guitarist Joe Holmes stood in for Becker during the tour. Later in 1991, Nirvana and grunge rock emerged, altering musical tastes and suddenly making Roth's brand of hard rock seem unfashionable. Roth's band fractured shortly following the tour's completion. With one exception – 1997's well-received DLR Band album, featuring guitarist John 5 and drummer Ray Luzier – until his reconciliation with Van Halen in 2006, Roth would utilize hired-hands and studio musicians on his club and amphitheater solo tours.
 Links: a. RIAA certification b. Joe Holmes c. Ray Luzier d. John 5 (guitarist)
Example Output:
b