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: How long was the Nazi Party around for before Stahlecker joined it? Passage:On 1 May 1932, Stahlecker joined the Nazi Party (no. 3,219,015) as well as the SS (no. 73,041). On 29 May 1933, he was appointed deputy director of the Political Office of the Württemberg State Police. In 1934, he was appointed head of the Gestapo in the German state of Württemberg and soon assigned to the main office of the Sicherheitsdienst (SD). On 11 May 1937, he became head of the Gestapo in Breslau. After the incorporation of Austria in 1938, Stahlecker became SD chief of the Danube district (Vienna), a post he retained even after being promoted to SS-Standartenführer. In the summer of 1938, Stahlecker became Inspector of the Security Police in Austria, succeeding Gestapo chief Heinrich Müller in that position. As of 20 August 1938, Stahlecker was the formal head of the Central Agency for Jewish Emigration in Vienna, though its de facto leader was Adolf Eichmann. Differences of opinion with Reinhard Heydrich motivated Stahlecker to move to the Auswärtiges Amt (Foreign Office), after which he held posts as the commander of the Security Police and SD in the Protectorate of Bohemia and Moravia under SS-Brigadeführer Karl Hermann Frank. In mid-October 1939, Eichmann and Stahlecker decided to begin implementation of the Nisko Plan.
 Links: a. Nazi Party b. Lublin Reservation c. Federal Foreign Office d. Brigadeführer
Example Output: a

Example Input: Question: Who was governor of the state in which Moore studied law in 1856? Passage:He was born in Lewisburg, Virginia in a portion of the state along the Ohio River which became West Virginia in his lifetime. His father had been born in Shenandoah County and moved across the Appalachian Mountains to the Greenbrier County area, but died when Charles was an infant. His paternal grandfather had married a daughter of Joseph Morgan, who helped settle the trans-Appalachian area. His mother, Augusta Delphia Page of Staunton, Virginia, a daughter of Major Charles Page, died in 1844 so Charles and his sister were raised by their uncle, George Moore in Mason County. When Charles was 16, he was sent to Marshall Academy in Huntington, and he would also study with John I Van Meter in Pike County, Pennsylvania, then attend Jefferson College (which later became Washington and Jefferson College) in Canonsburg, Pennsylvania. While at Jefferson College, Charles Moore helped found the Phi Kappa Psi fraternity before graduating in 1853. Moore then briefly attended Union College in New York. Returning to Virginia, he studied law at the University of Virginia and completed the course in 1856.
 Links: a. Washington & Jefferson College b. Staunton, Virginia c. Virginia d. Mason County, West Virginia
Example Output: c

Example Input: Question: Which university that Lewis attended was found first? Passage:William Lewis was educated at the University of Colorado, Texas Christian University and New York University. He began his career as a writer and an athlete before deciding to pursue a career in opera. He began his voice training under Karl Kritz and Arthur Faguy Coté in Fort Worth, followed by studies with Susan Seton and Hulda and Luigi Rossini in New York. He made his professional opera debut in 1953 with Fort Worth Opera as Rinuccio in Puccini's Gianni Schicchi. Two years later he won the Metropolitan Opera's Audition of the Air competition (precursor to the National Council Auditions). Lewis made his debut at the Metropolitan Opera as Narraboth in Salome on March 1, 1958 and subsequently sang in 234 performances in his 35 years with the company. In 1975 he made his debut at San Francisco Opera as Steuermann and Erik in The Flying Dutchman and has sung in sixteen different productions with the company in subsequent seasons. In 1981 he made his debut at the Salzburg Festival in the title role of Offenbach's The Tales of Hoffmann, returning there for the following four years in such roles as Arbace in Idomeneo and the First Geharnischter in The Magic Flute. In 1990 he made his debut at the Teatro Lirico in the world premiere of Azio Corghi's Blimunda.
 Links: a. Giacomo Puccini b. Idomeneo c. University of Colorado Boulder d. San Francisco Opera
Example Output:
c