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 old was Nusslein-Volhard when she won the Nobel Prize in Physiology and Medicine? Passage:The concept of the morphogen has a long history in developmental biology, dating back to the work of the pioneering Drosophila (fruit fly) geneticist, Thomas Hunt Morgan, in the early 20th century. Lewis Wolpert refined the morphogen concept in the 1960s with the French flag model, which described how a morphogen could subdivide a tissue into domains of different target gene expression (corresponding to the colours of the French flag). This model was championed by the leading Drosophila biologist, Peter Lawrence. Christiane Nusslein-Volhard was the first to identify a morphogen, Bicoid, one of the transcription factors present in a gradient in the Drosophila syncitial embryo. She was awarded the 1995 Nobel Prize in Physiology and Medicine for her work explaining the morphogenic embryology of the common fruit fly. Groups led by Gary Struhl and Stephen Cohen then demonstrated that a secreted signalling protein, Decapentaplegic (the Drosophila homologue of transforming growth factor beta), acted as a morphogen during the later stages of Drosophila development.
 Links: a. Christiane Nüsslein-Volhard b. Lewis Wolpert c. Lewis Wolpert d. Transcription factor

Ex Output:
a


Ex Input:
Question: In what African country did Italy see a collapse in 1942? Passage:At the beginning of 1943, Italy was facing defeat. The collapse of the African front on 4 November 1942 and the Allied landings in North Africa on 8–12 November exposed Italy to an invasion of the Allied forces. The defeat of the Italian expeditionary force (ARMIR) in Russia, the heavy bombings of the cities, and the lack of food and fuel demoralized the population, the majority of whom wanted to end the war and denounce the alliance with Germany. Italy needed German aid in order to maintain control of Tunisia, the last stronghold of the Axis powers in Africa. Italy's Duce, Benito Mussolini, was persuaded that the war could be decided in the Mediterranean theater. On 29 April 1943, at the meeting in Klessheim, Hitler rejected Mussolini's proposition to seek a separate peace with Russia and move the bulk of the German Army south. The request for reinforcements to defend the bridgehead in Tunisia was refused by the Wehrmacht, which no longer trusted the Italian will to maintain resistance. Mussolini's health was another main factor of uncertainty. He was depressed and sick after being diagnosed with gastritis and duodenitis of a nervous origin. Because of his illness, the Duce was often forced to stay at home, depriving Italy of effective government.
 Links: a. Second Battle of El Alamein b. Gastritis c. Axis powers d. Italian Army in Russia

Ex Output:
a


Ex Input:
Question: Who directed the film for which Ali MacGraw won  the Golden Globe Award for Most Promising Newcomer? Passage:Elizabeth Alice "Ali" MacGraw (born April 1, 1939) is an American actress, model, author, and animal rights activist. She first gained attention with her role in the film Goodbye, Columbus (1969), for which she won the Golden Globe Award for Most Promising Newcomer. She gained an international profile for her role in the film Love Story (1970), for which she was nominated for an Academy Award for Best Actress and won the Golden Globe Award for Best Actress in a Motion Picture – Drama. In 1972, MacGraw was voted the top female box office star in the world and was honored with a hands and footprints ceremony at Grauman's Chinese Theatre after having been in just three films. She went on to star in the popular action films The Getaway (1972) and Convoy (1978) as well as the romantic sports drama Players (1979), the comedy Just Tell Me What You Want (1980), and the historical novel-based television miniseries The Winds of War (1983). In 1991, she published an autobiography, Moving Pictures.
 Links: a. Golden Globe Award for Best Actress in a Motion Picture – Drama b. The Getaway (1972 film) c. Goodbye, Columbus (film) d. The Winds of War (miniseries)

Ex Output:

c