Detailed Instructions: 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.
Problem:Passage: But these were cancelled at the last minute by Suffolk Police, prompting media speculation that the investigating team needed to carry out more tests. Nearly 10,000 calls from members of the public have been received by the investigating team, who are also trawling through 10,000 hours of CCTV footage in the hope of piecing together the final movements of all the women. Question: What began before these were cancelled at the last minute? Events: ['cancelled', 'prompting', 'speculation', 'out', 'tests', 'calls', 'received', 'trawling', 'hope', 'piecing', 'movements']
Solution:
trawling