Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Input: Consider Input: Context : Albert Johnson Walker (born 1946) is a Canadian criminal serving a prison term for embezzlement and murder. 
Answer : murder

Output: For what crime was Albert Johnson Walker prosecuted?


Input: Consider Input: Context : Maschenka (Russian: Машенька, Mashen'ka; English: Mary) is a 1987 British film adaptation of the debut novel by Vladimir Nabokov, first published under his pen name V. Sirin in 1926. 
Answer : Mary

Output: The Maschenka is based upon what?


Input: Consider Input: Context : Carnival Breeze is a Dream-class cruise ship of Carnival Cruise Line which entered service on June 3, 2012. 
Answer : Dream-class cruise ship


Output: What type of submarine was Carnival Breeze classified as?