In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: What country was the university Sadeq Tabatabaei got his doctorate from located in? Passage:In 1961, Sadegh Tabatabai went to Aachen to study biochemistry and later received his doctorate from the University of Bochum. While in Aachen, he organized a student group that campaigned against Shah Mohammad Reza Pahlavi. In 1967, he handled Ulrike Meinhof material about Iran, which was used in a famous column in Konkret magazine opposing the Shah's visit to West Germany that year. Tabatabai gave a speech at the grave of Benno Ohnesorg, an unarmed university student who was shot during a demonstration against the Shah's visit to the Deutsche Oper in Berlin by Karl-Heinz Kurras, a police officer later discovered to be an agent of the East German secret police, the Stasi.


Ex Output:
b


Ex Input:
Question: How many years did the war last that Eden's great-grandfather commanded the 2nd regiment of foot? Passage:Eden's great-grandfather was William Iremonger, who commanded the 2nd Regiment of Foot during the Peninsular War and fought under Wellington (as he became) at Vimeiro. He was also descended from Governor Sir Robert Eden, 1st Baronet, of Maryland and, through the Calvert Family of Maryland, he was connected to the ancient Roman Catholic aristocracy of the Arundell and Howard families, some of whom were Roman Catholics like the Dukes of Norfolk and others Anglican such as the earls of Carlisle, Effingham and Suffolk. The Calverts had converted to the Established Church early in the 18th century to regain the proprietorship of Maryland. He was also descendant from the Schaffalitzky de Muckadell family of Denmark, and Bie family of Norway. Eden was once amused to learn that one of his ancestors had, like Churchill's ancestor the Duke of Marlborough, been the lover of Barbara Castlemaine.


Ex Output:
b


Ex Input:
Question: What is the current population of Quesnel's birthplace? Passage:Quesnel was born on 18 January 1765 in Saint-Germain-en-Laye which is now part of Yvelines department near Paris. He enlisted in the 25th Infantry Regiment in the French Royal Army on 18 July 1782. He was promoted to corporal on 18 September 1783, sergeant on 10 October 1784, and farrier on 7 July 1786. After the outbreak of the French Revolution he advanced in rank to sergeant major on 12 September 1789 and sous lieutenant on 15 September 1791. After this, his promotions followed with dizzying swiftness. He became a lieutenant of grenadiers on 19 April 1792 and captain on 1 May of the same year. Promotion to adjutant general chef de bataillon came on 15 May 1793 and adjutant general chef de brigade on 30 September 1793. He became a general of brigade on 26 December 1793.


Ex Output:

a