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: Which road is longer, KY 1319 (Kings Church Road) or KY 155 (Taylorsville Lake Road)? Passage:Kentucky Route 1531 is a rural secondary highway that begins in northeastern Bullitt County and ends in northwestern Shelby County, but the route spends almost all of its length in the city of Louisville in eastern Jefferson County. The highway begins at KY 1319 (Kings Church Road) near Whitfield. KY 1531 heads northwest along Dawson Hill Road then turns northeast onto Routt Road to enter the city of Louisville and Jefferson County. The highway crosses Wheelers Run and Back Run and meets the eastern end of KY 1819 (Brush Run Road) south of the Routt neighborhood of Louisville. KY 1531 follows Sheckels Run to its crossing of Cane Run and reaches KY 155 (Taylorsville Lake Road) south of Fisherville. The highway runs concurrently with KY 155 northwest across Floyds Fork of the Salt River to KY 148 (Taylorsville Road), with which the route heads east through Fisherville and across Floyds Fork again.
Links: a. Kentucky Route 155 b. Louisville, Kentucky c. Fisherville, Louisville d. Concurrency (road)
Example Output: a

Example Input: Question: How many casualties had the Japanese Army suffered by the time Vincent was sent to Tokyo? Passage:Born the son of Colonel Arthur Hare Vincent and Elizabeth Rose Manson and educated at Wellington College and the Royal Military Academy, Woolwich, Vincent was commissioned into the Royal Artillery as a second lieutenant on 24 July 1891. He was promoted to lieutenant on 24 July 1894 and to captain on 13 February 1900. He served with the China Expeditionary Force in late 1900 and then in the Second Boer War in South Africa. Following the end of the war, Vincent left Point Natal for India on the SS Ionian in October 1902 with other officers and men of the J Battery Royal Horse Artillery, and after arrival in Bombay, was stationed in Meerut, Bengal Presidency. In 1903, Vincent was sent to Tokyo to learn Japanese: he served as British military attache with the Japanese Army during the Russo-Japanese War and, from 1 March 1904, was attached to the 2nd Division of the First Japanese Army in Manchuria.
Links: a. Imperial Japanese Army b. Second lieutenant c. Second Boer War d. Royal Military Academy, Woolwich
Example Output: a

Example 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
Example Output:
c