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: Of the two colonies captured by Philip, which one was established first? Passage:Athens and Macedon had been at war since 356 BC, after Philip's capture of the Athenian colonies of Pydna and Potidea. Shortly afterwards, the Third Sacred War began after the Phocian seizure of the Temple of Apollo in Delphi. Athens allied herself with Phocis, against the other members of the Amphictyonic League. In 354 or 353 BCE, the Thessalians, having been defeated by the Phocians, requested that Philip become archon of Thessaly, to which Philip assented, drawing Macedon into the Sacred War. In 352 BC, Philip's erstwhile ally, the Chalkidian League (led by Olynthos), alarmed by Philip's growing power, sought to ally themselves with Athens, in clear breach of their alliance with Philip. In response, Philip attacked Chalkidiki in 349 BC, and by 348 BC, had completely destroyed the Chalkidian League, razing Olynthos in the process.
 Links: a. Phocis (ancient region) b. Chalcidian League c. Expansion of Macedonia under Philip II d. Pydna
Example Output: d

Example Input: Question: When did the Tokyo Kaisei school change it's name? Passage:The Japanese exhibition at the fair was the product of years of preparation. The empire had received its invitation in 1871, close on the heels of the Meiji Restoration, and a government bureau was established to produce an appropriate response. Shigenobu Okuma, Tsunetami Sano, and its other officials were keen to use the event to raise the international standing of Japanese manufactures and boost exports. 24 engineers were also sent with its delegation to study cutting-edge Western engineering at the fair for use in Japanese industry. Art and cultural relics at the exhibit were verified by the Jinshin Survey, a months-long inspection tour of various imperial, noble, and temple holdings around the country. The most important products of each province were listed and two specimens of each were collected, one for display in Vienna and the other for preservation and display within Japan. Large-scale preparatory exhibitions with this second set of objects were conducted within Japan at the Tokyo Kaisei School (today the University of Tokyo) in 1871 and at the capital's Confucian Temple in 1872; they eventually formed the core collection of the institution that became the Tokyo National Museum. 
 Links: a. University of Tokyo b. Sano Tsunetami c. Ōkuma Shigenobu d. University of Tokyo
Example Output: a

Example Input: Question: Is the city that was captured that enabled Spain to recover East Florida now the capital of the Bahamas? Passage:The rivalry with Britain also led him to support the American revolutionaries in their War of Independence despite his misgivings about the example it would set for the Spanish Colonies. During the war, Spain recovered Menorca and British West Florida in military campaigns, but failed to regain Gibraltar. Spanish military operations in West Florida and on the Mississippi River helped the Thirteen Colonies secure their southern and western frontiers from British attack. The capture of Nassau in the Bahamas enabled Spain to also recover East Florida during peace negotiations. The Treaty of Paris of 1783 confirmed the recovery of the Floridas and Menorca, and restricted the actions of British commercial interests in Central America.
 Links: a. West Florida b. American Revolutionary War c. Nassau, Bahamas d. The Bahamas
Example Output:
c