Definition: 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.
Input: Question: How old was Guillaume Brune the year Lapisse was appointed chef de brigade of the 36th Lien infantry Demi-brigade? Passage:In 1798, Lapisse and the 57th were assigned first to the Army of England and later to the Army of Mainz. On 10 June 1799 he was appointed chef de brigade of the 36th Line Infantry Demi-brigade. In mid-September that year, the 36th was part of Jean-de-Dieu Soult's division in Andre Massena's army in Switzerland. During the Second Battle of Zurich on 25 September 1799, Soult launched a surprise assault crossing of the Linth River while the French main body under Andre Massena attacked the Russians at Zurich. The Austrian commander on the Linth, Friedrich Freiherr von Hotze was killed and his command defeated. Lapisse received a battlefield promotion to general of brigade on 26 September 1799. Subsequently, Lapisse fought with the Army of Italy under Guillaume Brune and Bon-Adrien Jeannot de Moncey. On 12 January 1801 he had his horse killed under him at Castelfranco Veneto while leading the 1st Brigade of the Advance Guard. After the peace he commanded French troops in Liguria from 1801 to 1803. He became a member of the Legion d'Honneur on 11 December 1803.

Output:
b