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 Itagaki Taisuke when he started The Freedom and People's Rights Movement? Passage:A major proponent of representative government was Itagaki Taisuke, a powerful leader of Tosa forces who had resigned from his Council of State position over the Korean affair in 1873. Itagaki sought peaceful rather than rebellious means to gain a voice in government. Such movements were called The Freedom and People's Rights Movement. He started a movement aimed at establishing a constitutional monarchy and a national assembly. Itagaki and others wrote the Tosa Memorial in 1874 criticizing the unbridled power of the oligarchy and calling for the immediate establishment of representative government. Dissatisfied with the pace of reform after having rejoined the Council of State in 1875, Itagaki organized his followers and other democratic proponents into the nationwide Aikokusha (Society of Patriots) to push for representative government in 1878. In 1881, in an action for which he is best known, Itagaki helped found the Jiyūtō (Liberal Party), which favored French political doctrines. In 1882 Ōkuma Shigenobu established the Rikken Kaishintō (Constitutional Progressive Party), which called for a British-style constitutional democracy. In response, government bureaucrats, local government officials, and other conservatives established the Rikken Teiseitō (Imperial Rule Party), a pro-government party, in 1882. Numerous political demonstrations followed, some of them violent, resulting in further government political restrictions. The restrictions hindered the political parties and led to divisiveness within and among them. The Jiyūtō, which had opposed the Kaishintō, was disbanded in 1884, and Ōkuma resigned as Kaishintō president.
 Links: a. Seikanron b. Ōkuma Shigenobu c. Itagaki Taisuke d. Aikoku Kōtō

Ex Output:
c


Ex Input:
Question: How many years were there between the start of Mikami's Resident Evil series and his collaboration with Suda on Killer7? Passage:The game's history can be traced back to 2005, when Goichi Suda and Shinji Mikami (creator of the Resident Evil series) became good friends while working together on Killer7. Suda wanted to make a survival horror game exclusively for the PlayStation 3. With his first horror title  receiving decent sales in Japan by 2006, Suda immediately began working on Kurayami (Japanese for 'Darkness') in his spare time. It was at one time thought to be called "Closer". However, EA later confirmed that name had been abandoned for another title. By the Electronic Entertainment Expo (E3) in 2006, a publisher for Kurayami had not yet been established. In 2008, Suda presented the game's concept to EA Games, who agreed to license the Unreal Engine 3 and to publish the game to a worldwide audience. Shinji Mikami was then invited to executive-produce the project. Suda wanted to announce the game at E3 2009, but was not allowed to do so, due to a media silence agreement between Grasshopper Manufacture and EA Games. That December, Akira Yamaoka (sound designer for the Silent Hill series) left Konami after finishing his work on  and joined Grasshopper Manufacture because he enjoyed the latter's game No More Heroes. Yamaoka began work as the sound designer for the game. The game went about five different versions until Electronics Arts approved it. The newly titled Shadows of the Damned was finally unveiled at the Tokyo Game Show in 2010 as an action game.
 Links: a. Konami b. Tokyo Game Show c. Resident Evil d. PlayStation 3

Ex Output:
c


Ex Input:
Question: What nations were involved in the Pacific War? Passage:After the partition of Korea following the end of the Pacific War, the Kyŏngwŏn Line was split along the 38th parallel between the stations of Hantangang and Ch'osŏngri, and the Korean State Railway, established following the nationalisation of all railways in North Korea in 1946, merged the truncated Wŏnsan−Ch'osŏngri section of the Kyŏngwŏn Line with the Wŏnsan−Kowŏn section of the former Hamgyŏng Line to create the Kangwŏn Line. Following the end of the Korean War and the establishment of the Military Demarcation Line, the section south of Wŏljŏngri ended up in South Korea, where the Korean National Railroad reabsorbed it into the Kyŏngwŏn Line. The section from P'yŏnggang to Kagok has been closed since the end of the war, and since then the line has its current name, from the two termini: P'yŏnggang and Wŏnsan. The line was severely damaged during the Korean War, but was quickly repaired after the war. The Kowŏn−Sep'o Ch'ŏngnyŏn section of the line was electrified in September 1980, and the electrification of the Sep'o Ch'ŏngnyŏn−P'yŏnggang section was completed in early 1986.
 Links: a. Pacific War b. Hamgyeong Line c. North Korea d. Pacific War

Ex Output:

a