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: A respected figure and twice a member of the Chinese People's Political Consultative Congress, Cai has used his scientific achievements to reach practical results for wetland conservation, defending the idea that "wetlands are closely linked to human survival and development." Cai also stressed the importance of wetlands for sustainable economic development and human well-being, especially in their function as the "kidneys of nature."

development