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 two companies have recently agreed to extend their two existing contracts on purchasing Chinese electricity via the 110- kV power grid for the next four years, ensuring power supplies for the five Vietnamese provinces of Lao Cai, Lai Chau, Ha Giang, Yen Bai and Tuyen Quang. Vietnam has purchased 588 million kWh each year under the contracts since they were signed in 2004, said the report.

agreed