TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : Nur-Pashi Kulayev (born 1980), a native of Engenoi, Chechnya, is thought to be the sole survivor of the 32 hostage-takers in the 2004 Beslan school hostage crisis, although Chechen warlord Shamil Basayev denied the claim, stating that one other escaped. 
Question : Which crime led to the conviction of Nur-Pashi Kulayev?

SOLUTION: Beslan school hostage crisis

PROBLEM: Context : Hermann-Friedrich Joppien (19 July 1912 -- 25 August 1941) was a German Luftwaffe military aviator during World War II, a fighter ace credited with 70 enemy aircraft shot down in roughly 270 combat missions. 
Question : During which historic war was Hermann-Friedrich Joppien an officer?

SOLUTION: World War II

PROBLEM: Context : Window at Tangier by Henri Matisse (1912 - The Pushkin Museum of Fine Arts, Moscow); also referred to as La Fenêtre à Tanger, Paysage vu d'une fenêtre, and Landscape viewed from a window, Tangiers. 
Question : What is the name of the place where Window at Tangier can be found?

SOLUTION:
Pushkin Museum