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 was the film debut of the actor who played Peter Fox? Passage:Dr. John Rollason (Peter Cushing), his wife, Helen (Maureen Connell), and assistant, Peter Fox (Richard Wattis), are guests of the Lama (Arnold Marle) of the monastery of Rong-buk while on a botanical expedition to the Himalayas. A second expedition, led by Dr. Tom Friend (Forrest Tucker) accompanied by trapper Ed Shelley (Robert Brown), photographer Andrew McNee (Michael Brill) and Sherpa guide Kusang (Wolfe Morris), arrives at the monastery in search of the legendary Yeti or Abominable Snowman. Rollason, despite the objections of his wife and the Lama, decides to join Friend's expedition. Whereas Rollason is motivated by scientific curiosity to learn more about the creature, Friend seeks fame and fortune and wants to capture a live Yeti and present it to the world's press.
Links: a. Maureen Connell b. Richard Wattis c. Lama d. Himalayas

Ex Output:
b

Ex Input:
Question: What's the average lifespan of the animal that has a jaw with properties similar to those that probably led to the evolution of baleen? Passage:The oldest true fossils of baleen are only 15 million years old because baleen rarely fossilizes, and scientists believe it originated considerably earlier than that. This is indicated by baleen-related skull modifications being found in fossils from considerably earlier, including a buttress of bone in the upper jaw beneath the eyes, and loose lower jaw bones at the chin. Baleen is believed to have evolved around 30 million years ago, possibly from a hard, gummy upper jaw, like the one a Dall's porpoise has; it closely resembles baleen at the microscopic level. The initial evolution and radiation of baleen plates is believed to have occurred during Early Oligocene when Antarctica broke off from Gondwana and the Antarctic Circumpolar Current was formed, increasing productivity of ocean environments. This occurred because the current kept warm ocean waters away from the area that is now Antarctica, producing steep gradients in temperature, salinity, light, and nutrients, where the warm water meets the cold.
Links: a. Antarctic Circumpolar Current b. Dall's porpoise c. Salinity d. Salinity

Ex Output:
b

Ex Input:
Question: What was the circulation of the Picture Post the year Cameron became a dogsbody with the Weekly News? Passage:Cameron began as an office dogsbody with the Weekly News in 1935. Having worked for several Scottish newspapers and for the Daily Express in Fleet Street, he was rejected for military service in World War II. After the war, his experience of reporting on the Bikini Atoll nuclear experiments turned him into a pacifist and a founding member of the Campaign for Nuclear Disarmament. He continued to work for the Express until 1950, after which he briefly joined Picture Post, where he and photographer Bert Hardy covered the Korean War, winning the Missouri Pictures of the Year International Award for "Inchon". Tom Hopkinson, the editor of Picture Post, lost his job as publisher when he defended the magazine's coverage of atrocities committed by South Korean troops at a concentration camp in Pusan. Cameron wrote, "I had seen Belsen, but this was worse. This terrible mob of men - convicted of nothing, un-tried, South Koreans in South Korea, suspected of being 'unreliable'." The founder of the Hulton press, Edward G. Hulton, decided to "kill" the story.
Links: a. Pacifism b. Picture Post c. Korean War d. Bert Hardy

Ex Output:
b