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: What is the location of the headquarters for the company that makes 3M tape? Passage:Surgical tape or medical tape is a type of pressure-sensitive adhesive tape used in medicine and first aid to hold a bandage or other dressing onto a wound. These tapes usually have a hypoallergenic adhesive which is designed to hold firmly onto skin, dressing materials, and underlying layers of tape, but to remove easily without damaging the skin. They allow air to reach the skin ("breathable"). Some breathable tapes such as Kinesiology Tape, and other elastic bandages with adhesive are made of cotton. Surgical tape is often white because it contains zinc oxide, which is added to help prevent infections. Tapes made of microporous material, such as 3M Micropore, are widely used.
 Links: a. Adhesive b. Adhesive tape c. Adhesive d. 3M

Ex Output:
d


Ex Input:
Question: Who was in charge at Princeton University the year Barschall graduated from that school? Passage:Barschall was born as Heinrich Hermann Barschall in Berlin, Germany; his father was a patent attorney who had received a Ph.D. in chemistry after studying with Nobel Laureates Emil Fischer and Fritz Haber. After beginning study in several universities in Germany, he emigrated to the United States in 1937 during the early Holocaust period; though raised as a Lutheran, he had some Jewish ancestry. He received his Ph.D. from Princeton University in 1940 under the direction of Rudolf Ladenburg; he also worked closely with John A. Wheeler. After a suggestion by Niels Bohr, he carried out in only a few days with fellow graduate student Morton H. Kanner the first demonstration of fission by fast neutrons and thorium and uranium. His thesis was on the interaction of fast neutrons with helium. In a paper with John A. Wheeler he reported the discovery of spin-orbit coupling in neutron scattering.
 Links: a. Emil Fischer b. Princeton University c. Jews d. John Archibald Wheeler

Ex Output:
b


Ex Input:
Question: Who wrote the musical Caissie starred in, both on Broadway and on the national tour? Passage:A week after graduating from AMDA she was cast in the role of Maureen Johnson in the U.S. national tour of Rent. Levy then played the role of Penny Pingleton in both the Broadway and U.S. national tour companies of Hairspray after understudying the role in the Toronto company. During this time, she also covered the role of Amber Von Tussle. In 2008, Levy starred as Elphaba in the Los Angeles sit-down production of Wicked. She had previously understudied the role on Broadway and briefly served as standby in Los Angeles. She next starred as Sheila in the Broadway revival of Hair in 2009–2010 at the Al Hirschfeld Theatre. She transferred to the West End revival in 2010 at the Gielgud Theatre.
 Links: a. Al Hirschfeld Theatre b. Hairspray (musical) c. Gielgud Theatre d. Broadway theatre

Ex Output:

b