Definition: In this task, a passage will be given and the goal is to identify an event from the passage. An event is defined as a single word representing something that happened, is happening, or may happen. An event can be factual or hypothetical, positive or negative, certain or uncertain. While most events are based on verbs, an event can also be based on a noun (ex. storm, snow, rainfall) or a copula verb (is, was, been, etc.). The event must not be a pronoun or an adjective. For noun events with multiple words, use the last word in the phrase as event.
Input: Passage: Kyrgyzstan, an impoverished but strategically located republic that hosts both Russian and US air bases, has been struggling to stabilise since longtime president Askar Akayev was overthrown in a street revolt in March 2005. The country has been plagued by political unrest, contract killings and organised crime.

killings