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: The coaster has the seating capacity of 25 people, but some 45 to 50 people were on board when the accident occurred. Ambulances of the aid groups, busy in the quake-relief activities in the region, rushed to the site of the accident and started shifting the injured to local hospitals.

accident