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: How old was Walt Disney the year Snow White and the Seven Dwarfs was released? Passage:After the success of Walt Disney Productions' first feature-length animated film Snow White and the Seven Dwarfs (1937), filmmaker Walt Disney himself made several attempts to adapt the fairy tale "Beauty and the Beast" by Jeanne-Marie Leprince de Beaumont into one of the studio's earliest animated feature films during the 1930s and 1950s. However, the project was continuously abandoned due to the fairy tale's "static" plot and main characters. The filmmaker was also concerned about the "unnecessary intensity" required to depict Belle's imprisonment. Inspired by the unprecedented success of The Little Mermaid (1989), Walt Disney Studios chairman Jeffrey Katzenberg green-lit another attempt at adapting "Beauty and the Beast" under the direction of Richard Purdum. However, Katzenberg did not approve of Purdum's dark, somber version of the fairy tale, and ultimately ordered that it be restarted from scratch in favor of creating a Broadway-style musical film starring a strong heroine, more similar to The Little Mermaid. Opting instead for a "feminist twist" on the original story, largely in response to critics' negative reception to Ariel regarding her pursuit of Eric being her overall character, Katzenberg hired television writer Linda Woolverton, who had never written an animated film before, to write the film's screenplay.
 Links: a. Musical film b. Walt Disney c. Linda Woolverton d. Beauty and the Beast
Example Output: b

Example Input: Question: What was the New York giants regular season record the year Wally Pipp hit .296, and the Yankees lost to them that same year in the World Series? Passage:In 1918, Pipp hit only two home runs, but batted .304. He missed playing time under the nation's "work or fight" rule during World War I; he worked as a naval aviation cadet at the Massachusetts Institute of Technology. He batted .275 with seven home runs in 1919, as Babe Ruth surpassed him as the best power hitter in the American League. The Yankees moved to strengthen their team after the 1919 season, adding Ruth and fellow outfielder Bob Meusel and third baseman Joe Dugan. Between 1920 and 1924, Pipp had a .301 average, with season averages of 29 doubles, 94 runs scored, and 97 runs batted in (RBI) per season. Led by their strong lineup and additions to the pitching staff, such as Waite Hoyt, the Yankees finished in second place in 1920. Pipp became the cleanup hitter, behind Ruth in the batting order. Pipp hit .296 in 1921, and the Yankees won the American League pennant. However, they lost the 1921 World Series to the crosstown rival New York Giants of the National League.
 Links: a. Waite Hoyt b. History of the New York Giants (baseball) c. 1921 World Series d. Bob Meusel
Example Output: b

Example Input: Question: Is African-American studies still taught at the University of Oklahoma? Passage:The Birth of a Nation is written, produced, and directed by Nate Parker, who also stars as Nat Turner. Parker wrote the screenplay, which was based on a story he co-wrote with Jean McGianni Celestin. Parker learned about Turner from an African-American studies course at the University of Oklahoma. He began writing the screenplay for a Nat Turner film in 2009 and had a fellowship at a lab under the Sundance Institute. While he got writing feedback from filmmakers like James Mangold, he was told that a Nat Turner film could not be produced. The Hollywood Reporter said:But what he heard instead were all the reasons a movie about Nat Turner wouldn't work: Movies with black leads don't play internationally; a period film with big fight scenes would be too expensive; it was too violent; it wouldn't work without a big box-office star leading it; Turner was too controversial—after all, he was responsible for the deaths of dozens of well-off white landowners.After Parker finished his acting role in Beyond the Lights in late 2013, he told his agents he would not continue acting until he had played Nat Turner in a film. He invested $100,000 of his money to hire a production designer and to pay for location scouting in Savannah, Georgia. He met with multiple financiers, and the first to invest in the film were retired basketball player Michael Finley (who had previously invested in the film The Butler) and active basketball player Tony Parker (no relation). Parker eventually brought together 11 groups of investors to finance 60% of the production budget, and producer Aaron L. Gilbert of Bron Studios joined to cover the remaining financing.
 Links: a. University of Oklahoma b. African-American studies c. Nat Turner d. Nat Turner
Example Output:
a