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 of the regiments that Ellwood served in was the largest? Passage:Ellwood graduated from Duntroon in 1990 and was commissioned into the Royal Australian Infantry Corps. His early career included postings as a platoon commander in the 2nd/4th Battalion, Royal Australian Regiment and as an instructor in field training and tactics at Duntroon, before he was seconded to the British Army from 1998 for a two-year exchange with the Irish Guards, then stationed in Germany. During the secondment he deployed as part of the NATO intervention in the Kosovo War in 1999, serving as second-in-command of an armoured infantry company in the King's Royal Hussars Battle Group. For his service in Kosovo, Ellwood was awarded a Commander British Forces Commendation. He returned to Australia as a company commander and operations officer in the 5th/7th Battalion, Royal Australian Regiment (5/7RAR). Ellwood commanded B Company on operations in East Timor from October 1999 to April 2000, when 5/7RAR deployed with the International Force East Timor.
Links: a. 2nd/4th Battalion, Royal Australian Regiment b. Kosovo War c. 2nd/4th Battalion, Royal Australian Regiment d. King's Royal Hussars
Example Output: a

Example Input: Question: When was the gunnery school David moved to in 1932 built? Passage:He was assigned as a midshipman on 1 May 1929 after finishing top of his class in five subjects. In 1930 he was assigned to the battleship Marlborough, part of the Third Battle Squadron; and the following year to the battlecruiser in September 1931 on which he served with fellow midshipman, and future vice admiral, Peter Gretton. While serving on the ship, Wanklyn was promoted to acting sub-lieutenant (the equivalent of an army second lieutenant) on 1 January 1932. Soon afterwards he moved to the naval gunnery school - HMS Excellent - at Whale Island, Portsmouth to learn more about naval navigation to qualify for his second ring at the rank of lieutenant. In February 1933 he moved to HMS Dolphin and was promoted to lieutenant on 1 February 1933.
Links: a. Excellent b. Battlecruiser c. Vice admiral d. Whale Island, Hampshire
Example Output: a

Example Input: Question: How long had Seminole been incorporated for the year Jack Jordan was born? Passage:At the time of his ordeal, Berk was the regional dean of the Texas Tech medical branch in Amarillo, but on August 1, 2006, he was moved to the high position at the Lubbock campus. There are two other branch campuses in Odessa and El Paso. At the time of his abduction, Berk was at home on Sunday morning with his younger son, Justin. The older son, Jeremy, was away in college. Berk's wife, Shirley H. Berk (born c. 1950), a microbiologist who had served on a school board while they lived in Johnson City, Tennessee, was at church. The culprit, Jack Lindsey Jordan (born in 1963 in Seminole, Texas), gained entry from an open rear garage door and an unlocked back entrance to the residence. Normally, both the garage and the back door would have been locked. Jordan demanded money and jewelry to pay for transportation and narcotics, particularly methamphetamines, as he proceeded along Interstate 40 west toward New Mexico. After being held for four hours in Jordan's vehicle on a cool, windy day, common to the Panhandle in March, Berk was released unharmed near a gasoline station in rural Bushland in southwestern Potter County. This life-threatening event propelled the physician to write about his ordeal. He interlaces the narrative with much of his life story, from his birth in New York City, his childhood in New Jersey, his medical education at Boston University School of Medicine, his work in the fields of infectious diseases,geriatrics, and internal medicine at the East Tennessee State University James H. Quillen College of Medicine in Johnson City, and his relocation to Amarillo, his adopted city which he had grown to love. Since the events of 2005, Dr. Berk has been transferred to the main medical campus in Lubbock.
Links: a. Seminole, Texas b. Narrative c. Seminole, Texas d. New Jersey
Example Output:
a