Ursula
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You're a genius, there aren't many options, you've reviewed them all.
1. Rayne, October 28th - the largest accident in the Baku Metro, as well as the incident with the highest number of casualties in the history of all metro systems worldwide.
and
2. Vespers - 1986 - Chernobyl.
Какую бы чушь ты не нес, в ней всегда есть крупица правды.