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: But his latest comments remove any doubt that he also backs revisionist historians -- often branded in the West as neo-Nazis -- who maintain Nazi Germany's systematic slaughter of an estimated six million Jews between 1933 and 1945 never took place. "Why, under the pretext of this massacre, have you come to the heart of Palestine and the Islamic world ..., why have you created an artificial Zionist regime?"

maintain