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: Japan's Tomen Corp. said Thursday it had bought a 19 percent stake in Koppert Biological Systems BV, a Dutch company that breeds benign insects to protect vegetables against insect pests. The Japanese trading house has been a sales agent in Japan for the world's biggest breeder of benign insects since 1992 and sold for two years a type of bee that kills insects that thrive on tomatoes and strawberries.

bought