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: South Korean prosecutors Friday summoned two senior opposition politicians for questioning over a massive graft scandal enveloping the Hanbo business group, prompting charges of a political conspiracy. The Prosecutor General's Office called in Kim Sang-Hyon of the main opposition National Congress for New Politics and Kim Yong-Hwan of the second opposition United Liberal Democratic Party.

conspiracy