instruction:
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.
question:
Passage: The western military alliance invited the three central and eastern European countries to join the 16-nation bloc in July 1997 at the Madrid summit. The three countries have finished all necessary formalities for accession after the Hungarian parliament ratified the accession treaty on Tuesday.
answer:
invited

question:
Passage: He said the north's substantial Catholic minority demanded a settlement that would promote Northern Ireland's eventual unification with the Irish Republic. ''Nationalists in the north are not a minority in someone else's country.
answer:
said

question:
Passage: In 2006, poppy cultivation in Afghanistan reached a record 165, 000 hectares, up 59 percent from last year, according to a report by the UN Office on Drugs and Crime issued in September. Opium production reached 6,100 tons, witnessing a 49 percent rise over 2005 and accounting for 92 percent of the world's total supply, the report said.
answer:
cultivation