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.

Example Input: Passage: Reigning world number one Bob and Mike Bryan recovered from their lacklustre tournament opener in their Tuesday's Red Group match at Tennis Masters Cup, crashing former top-ranked pair Mark Knowles and Daniel Nestor 6-4, 6-4. Earlier in the day, fifth-seeded Leander Paes of India and Nedad Zimonjic from Serbia and Montenegro claimed their second win in Shanghai, defeating seventh-seeded Australian duo Wayne Arthurs and Paul Hanley 7-6(3), 7-6 (6) in two hours. Question: What event has begun but has not finished? Events: ['recovered', 'tournament', 'opener', 'match', 'Tuesday', 'Reigning', 'Masters', 'day', 'claimed', 'win', 'defeating', 'hours', 'crashing']
Example Output: Reigning

Example Input: Passage: Witnesses said the General Service Unit, a paramilitary wing of Kenyan police, opened fire on rioters, killing two, while a third was allegedly slashed to death. "As far as I am concerned, my officers had no instructions to use live bullets. Question: What event has already finished? Events: ['said', 'opened', 'fire', 'killing', 'slashed', 'death', 'instructions', 'use']
Example Output: said

Example Input: Passage: Technicians at the ministry of planning said that the building had collapsed on Tuesday because workers had failed to observe construction regulations. After the previous accidents, the local press blamed greedy proprietors for erecting buildings with the sole aim of cutting costs at the expense of safety. Question: What was happening before the previous accidents? Events: ['said', 'collapsed', 'failed', 'observe', 'accidents', 'blamed', 'erecting', 'cutting']
Example Output:
erecting