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 years did the owner of the private observatory live? Passage:It would seem that Gill's interests lay elsewhere since after a few years he sold the business, and then spent time equipping Lord Lindsay's private observatory at Dun Echt, Aberdeenshire. In 1874, Gill joined the expedition to Mauritius to observe the transit of Venus. Three years later he went to Ascension Island to observe a near approach of Mars and to calculate its distance. While carrying out these laborious calculations, he was notified of his appointment to the Cape Observatory, which, over the following 27 years he was to refurbish completely, turning it into a first-rate institution. Gill was a meticulous observer and had a flair for getting the best out of his instruments. His solar parallax observations with a heliometer and his calculations of distances to the nearer stars, are testimony to his outstanding work. He recruited Robert Innes to the Cape Observatory.
 Links: a. South African Astronomical Observatory b. Aberdeenshire (historic) c. James Lindsay, 26th Earl of Crawford d. South African Astronomical Observatory

Ex Output:
c


Ex Input:
Question: When was the country that was represented particularly well in the hip hop movement founded? Passage:Latinos, particularly Puerto Ricans, were at the forefront of the hip hop movement, however; they have often been forgotten in conversation. Nonetheless, we can see the presence and influence of Latinos in hip hop when we think about artist like: Africa Bambaataa & the members of the Zulu Nation (1960s), Latino DJ, DJ Disco Wiz (aka first Latino DJ in hip hop) & DJ Grandmaster Caz came together to form the Mighty Force (1974), DJ Charlie Chase of the Cold Crush Brothers (1975), Lee Quiñones & Lady Pink (1970s), and various others have allowed for Latinos to have a part in hip hop culture and hip hop history. Latina's also had a huge role in hip hop, women who were not on the hip hop stage take part in: the influence and making of music and hip hop performance, dancing of music, and graffiti art. Today we see Latinas like: La Caballota aka Ivy Queen (1995), Ana Bijoux (1995), Angie Martinez: "The Voice of New York" (1996), Hurricane G aka Gloria Rodriguez (1997), Mala Rodríguez (1990s), Lisa M: "The Queen of Spanish Rap" (1988), Nina Dioz (2009), Snow Tha Product aka Claudia Feliciano (2011), Mélony Redondo: MelyMel (2018) have been women who have all taken the stage and made their mark as Latina and Afro-Latina rappers/artist in the hip hop world.
 Links: a. Ivy Queen b. Angie Martinez c. Ivy Queen d. Puerto Ricans

Ex Output:
d


Ex Input:
Question: Was Vida blue older than Kent Mercker when he threw his no-hitter? Passage:Vida Blue, Kent Mercker, Kevin Millwood, and Cole Hamels are the only pitchers to start both a complete game no-hitter and a combined no-hitter. Vida Blue no-hit the Minnesota Twins on September 21, 1970, while pitching for the Oakland Athletics. He combined with Glenn Abbott, Paul Lindblad, and Rollie Fingers to no-hit the California Angels on September 28, 1975. While with the Atlanta Braves in 1991, Mercker, Mark Wohlers and Alejandro Peña no-hit the San Diego Padres in the National League's first combined no-hitter. Mercker threw a complete game no-hitter against the Los Angeles Dodgers on April 8, 1994. In addition to the game above in which Millwood and the Seattle Mariners tied the record by using six pitchers in a no-hitter, Millwood previously threw a complete game no-hitter against the San Francisco Giants on April 27, 2003, while with the Philadelphia Phillies. Both Mercker and Blue were All-Stars in the seasons of their combined no-hitters, and Blue also won the Cy Young Award and the Most Valuable Player Award during his career.
 Links: a. Oakland Athletics b. Vida Blue c. Oakland Athletics d. Vida Blue

Ex Output:

b