Definition: In this task, you will be given a passage, a question and a list of single-word events identified from the passage. The goal is to point out all events from the given event list that can answer the question. If a question is unanswerable or none of the events answer the question, output should be empty.
Input: Passage: With the theme of "Innovation, Credibility and Harmony", the summit had a series of forums on innovation, real estate development and Chinese private entrepreneurs. "Weakness in innovation and enterprise management now hinder the development of private enterprises in China," said Jiang Zhenghua,vice-chairman of the National People's Congress Standing Committee, China's top legislature, at the opening ceremony. Question: What happened during the summit? Events: ['summit', 'had', 'hinder', 'said', 'ceremony']
Output:
had