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.
--------
Question: Context : The 64th Venice International Film Festival, held in Venice, Italy, opened on August 29, 2007, with Joe Wright's Atonement and closed September 8, 2007. 
Answer : 2007

Answer: When did 64th Venice International Film Festival occurr?


Question: Context : The Ambushers is a novel by Donald Hamilton first published in 1963, continuing the exploits of assassin Matt Helm. 
Answer : Matt Helm

Answer: Which series is The Ambushers apart of?


Question: Context : Bertrand Stewart (December 1872 -- 18 September 1914) worked as a solicitor in London and was also a military officer in the Queen's Own West Kent Yeomanry, he fought in the Second Boer War and World War I. In between the two wars he volunteered to spy on German naval actions. 
Answer : Queen's Own West Kent Yeomanry

Answer:
In what military organization did Bertrand Stewart serve?