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 tourism industry in Kenya has been troubled for years _ in part because of the opening of new safari destinations in South Africa, in part because of Nairobi's well-deserved reputation for street crime. Tourism industry revenues reportedly dropped to $300 million last year, down from $450 million the year before.

been