Q: 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.
Passage: A major firefight broke out early Monday after nearly 200 militants crossed the border from Pakistan and attacked a border checkpost in the eastern Afghan province of Khost, police said. Five Taliban fighters and an Afghan militia soldier died in the hour-long exchange of fire, provincial police official Gul Dad said, adding that four Afghan nationals were arrested. Question: What event has started after the firefight broke out? Events: ['firefight', 'broke', 'crossed', 'attacked', 'said', 'died', 'exchange', 'said', 'adding', 'arrested']
A:
said