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 is the current population of the state from which The Army of Georgia returned in mid-May? Passage:On May 10, United States President Andrew Johnson had declared that the rebellion and armed resistance was virtually at an end, and had made plans with government authorities for a formal review to honor the troops. One of his side goals was to change the mood of the capital, which was still in mourning following the assassination of United States President Abraham Lincoln a month before at Ford's Theater. Three of the leading Federal armies were close enough to participate in the procession. The Army of the Tennessee arrived via train. The Army of Georgia, also under the command of William T. Sherman, had just completed its Carolinas Campaign and had accepted the surrender of the largest remaining Confederate army, that of Joseph E. Johnston. It arrived from North Carolina in mid-May and camped around the capital city in various locations, across the Potomac River from the Army of the Potomac, fresh off its victories over Robert E. Lee in Virginia. It had arrived in Washington on May 12. Officers in the three armies who had not seen each other for some time (in some cases since before the war) communed and renewed acquaintances, while at times, the common infantrymen engaged in verbal sparring (and sometimes fisticuffs) in the town's taverns and bars over which army was superior. Sherman, concerned that his Westerners would not present as polished an image as the eastern army, drilled his forces and insisted that uniforms be cleaned, buttons and brass shined, and that bayonets glistened.
 Links: a. Campaign of the Carolinas b. President of the United States c. North Carolina d. North Carolina

Ex Output:
c


Ex Input:
Question: How old is the producer of Viewtiful Joe? Passage:Viewtiful Joe is a 2.5D side-scrolling action-platformer, released on June 26, 2003. The title character is a parody of tokusatsu superheroes and is trying to save his girlfriend, who has been trapped in "Movieland" by a group of supervillains known as Jadow. To complete his quest, Joe must use his Viewtiful Effects Powers, which are based on camera tricks and special effects used in films. These include "Slow", which simulates bullet time; "Mach Speed", allowing Joe to attack all enemies with his afterimages; and "Zoom In", which triggers a camera close-up and unlocks special attacks. Internally, Capcom treated the game as a "staff-focused project" with the goal of increasing the skills of director Hideki Kamiya. The game achieved a Metacritic score of 93 and won GameCube Game of the Year awards from numerous publications including IGN, GMR, and USA Today. The game sold out its initial shipment of 100,000 to achieve a lifetime total of 275,000 units. Producer Atsushi Inaba considered the game a success, achieving his goals of training staff, keeping a small budget, and selling well. However, these numbers were lower than Capcom expected, prompting the publisher to port Viewtiful Joe to PlayStation 2 in 2004, with expanded features. This version sold 46,000 copies with a slightly lower Metacritic score of 90 owing to the lack of progressive scan and frame rate slowdown generated by the porting process.
 Links: a. Frame rate b. Hideki Kamiya c. Hideki Kamiya d. Atsushi Inaba

Ex Output:
d


Ex Input:
Question: How old was John Pershing when he graduated from the United States Military Academy? Passage:The son of a Union Army veteran of the American Civil War, Penn was born in Mattoon, Illinois and raised in Batavia, Ohio. He graduated from the United States Military Academy in 1886, and was a classmate and close friend of John J. Pershing. After graduation, he served in the Western United States as a member of the 13th and 2nd Infantry Regiments, and he was an 1891 graduate of the Infantry and Cavalry School, the predecessor of the Command and General Staff College. During the Spanish–American War, Penn served as a quartermaster officer at Camp George H. Thomas, Georgia and the Tampa mobilization point before contracting typhoid. After recovering, he was assigned to the Philippines, where he commanded 2nd Battalion, 34th Infantry. Penn's post-war assignments included service with the 7th Infantry in the Philippines, aide to General Henry Clark Corbin, and commander of provisional battalions in the 7th and 12th Infantry Regiments. He was a 1907 graduate of the Army War College, and during the Pancho Villa Expedition, Penn commanded the 3rd Infantry Regiment in Texas.
 Links: a. Spanish–American War b. 13th Infantry Regiment (United States) c. John J. Pershing d. Batavia, Ohio

Ex Output:

c