In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

Input: Consider Input: Context: Liu Bei combined forces with Cao Cao and defeated Lü Bu at the Link Information: The Battle of Xiapi was fought between the forces of Lü Bu against the allied armies of Cao Cao and Liu Bei from the winter of 198 to 7 February 199 Answer: from the winter of 198 to 7 February 199

Output: How long did the fight last in which Liu Bei and Cao Cao defeated Lü Bu?


Input: Consider Input: Context: One of the Tigers, commanded by SS-Obersturmführer Michael Wittmann, cut in behind the lead squadron, cutting them off and destroying the soft-skinned vehicles of the Rifle Brigade before running into the Sharpshooters Headquarters Troop and accompanying artillery observation tanks. Link Information: In October 1936 Wittmann joined the SS. On 5 April 1937, he was assigned to the regiment, later division Leibstandarte SS Adolf Hitler (LSSAH). Answer: Leibstandarte SS Adolf Hitler

Output: What regiment was the commander of the Tiger tank that cut off the Rifle Brigade from?


Input: Consider Input: Context: He also hosted and commentated Ten's coverage of the Red Bull Air Race series. Link Information: The Red Bull Air Race, established in 2003 and created by Red Bull GmbH Answer: 2003 


Output: What was the inaugural year of the air race series that Rust also hosted and commentated?