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.

[Q]: Context: His brother was Malcolm Fraser (1939–2012), Emeritus Professor of Opera at the University of Cincinnati and co-founder of the Buxton Festival Link Information: The Buxton Festival is an annual summer festival of opera, music, and (since 2000) a literary series, held in Buxton, Derbyshire, in England since its beginnings in July 1979 Answer: 1979
[A]: Which year did the festival that Robert Fraser's brother helped co-found first start?


[Q]: Context: Patassé went in disguise to the French Embassy in the Central African Republic to seek refuge. Link Information: The economic prefectures are Nana-Grébizi and Sangha-Mbaéré, while the commune is the capital city of Bangui Answer: Bangui 
[A]: What city was the French Embassy located in?


[Q]: Context: The cuts were so severe that the fleet had great difficulty in mobilizing its ironclad squadron to attack the port of Civitavecchia in September 1870, as part of the wars of Italian unification. Link Information: 1867 Garibaldi made a second attempt to capture Rome, but the papal army, strengthened with a new French auxiliary force, defeated his poorly armed volunteers at Mentana. Subsequently, a French garrison remained in Civitavecchia until August 1870,  Answer: 3
[A]:
How long did the war where Ancona attacked the port of Civitavecchia last?