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.
Q: Passage: Kopp also has been linked, through DNA testing, to a strand of hair found near where the sniper fired, law enforcement sources have said. Nicknamed the ''Atomic Dog'' in anti-abortion circles, Kopp had been arrested in several states since 1990 for protesting abortion. Question: What occurred after the testing? Events: ['linked', 'testing', 'found', 'fired', 'said', 'Nicknamed', 'arrested', 'protesting', 'abortion']
A:
linked