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: Are there any penguins on any of the islands Otto visited? Passage:He led the 1901-1904 Swedish Antarctic Expedition, aboard the ship Antarctic. The expedition visited the Falkland Islands before the ship, commanded by seasoned Antarctic sailor Carl Anton Larsen, dropped Nordenskjold's party off at Snow Hill Island, a small island off the coast of the Antarctic Peninsula. Nordenskiold overwintered at Snow Hill Island, while Antarctic returned to the Falklands. The following summer Larsen brought her south, intending to retrieve the Nordenskiold party, but she became trapped in ice which eventually crushed her hull, forcing Larsen and his crew to overwinter in a hastily constructed shelter on Paulet Island. Larsen and Nordenskjold finally rendezvoused at their fall-back rescue hut at Hope Bay in late 1903, where they were picked up by the Argentine Navy corvette ARA Uruguay (commanded by Julian Irizar), which had been dispatched when Antarctic had failed to make her appointed return to South America the previous year. Despite its end and the great hardships endured, the expedition was considered a scientific success, with the parties having explored much of the eastern coast of Graham Land, including Cape Longing, James Ross Island, the Joinville Island group, and the Palmer Archipelago. The expedition, which also recovered valuable geological samples and samples of marine animals, earned Nordenskjold lasting fame at home, but its huge cost left him greatly in debt.
Links: a. Graham Land b. Palmer Archipelago c. Falkland Islands d. ARA Uruguay
Example Output: c

Example Input: Question: What city is home to the team that was created for the 2000-01 season? Passage:The 200001 season saw the folding of the Summerland Warriors and the creation of the Creston Valley Thunder Cats. In 200102, the league was split from two to three divisions, the Neil Murdoch, Eddie Mountain, and Okanagan/Shushwap. Along with the division re-alignment, the North Okanagan Kings relocated to Enderby, becoming the Enderby Ice Kings. The Osoyoos Heat took on the name the Osoyoos Storm, and an expansion franchise was granted to Summerland, which took the name Summerland Sting. 200102 also saw the presence of the KIJHL's most accomplished alumnus, Shea Weber, who played for the league champions Sicamous Eagles for this single season. In 200203, the Princeton Posse joined the league, becoming the furthest west team in the KIJHL, and the Enderby Ice Kings folded after one season. In 200405, the Fernie Ghostriders joined the league from the North American Hockey League, and the following year the Golden Rockets were renamed the Golden Xtreme. They were renamed again the following year, this time becoming the Golden Jets. Also, 200607 saw the demise of the Osoyoos Storm, who moved to Kamloops Storm, while retaining the Storm name. In 200708, the league was divided into two conferences, which were furthermore split into two divisions each, dropping the Okanagan Shushwap, while creating the Eddie Mountain Conference, East and West Divisions, and likewise with the Neil Murdoch Conference. The Golden Xtreme was again renamed, this time reverting to the Rockets name. Furthermore, the Chase Chiefs joined the league in 200708, while the Fernie Ghostriders would capture the league title. There were no team changes in 200809, and the Nelson Leafs would capture the league title. In 200910, however, the Summerland Sting were forced to relocate to nearby Penticton, taking the name Penticton Lakers. Furthermore, an expansion team was granted to Armstrong, and the North Okanagan Knights were founded.
Links: a. North American Hockey League b. Creston Valley Thunder Cats c. Summerland Sting d. Penticton Lakers
Example Output: b

Example Input: Question: How many years did the ruler of the Sasanian Empire when it had confrontations with the Chionites rule the empire? Passage:Early confrontations between the Sasanian Empire of Shapur II with the nomadic hordes from Central Asia called the "Chionites" were described by Ammianus Marcellinus: he reports that in 356 CE, Shapur II was taking his winter quarters on his eastern borders, "repelling the hostilities of the bordering tribes" of the Chionites and the Euseni ("Euseni" is usually amended to "Cuseni", meaning the Kushans), finally making a treaty of alliance with the Chionites and the Gelani, "the most warlike and indefatigable of all tribes", in 358 CE. After concluding this alliance, the Chionites (probably of the Kidarites tribe) under their King Grumbates accompanied Shapur II in the war against the Romans, especially at the Siege of Amida in 359 CE. Victories of the Xionites during their campaigns in the Eastern Caspian lands were also witnesses and described by Ammianus Marcellinus.
Links: a. Sasanian Empire b. Xionites c. Xionites d. Xionites
Example Output:
a