Detailed Instructions: 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.
Q: 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.
Answer : Beslan school hostage crisis
A:
Which crime led to the conviction of Nur-Pashi Kulayev?