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: The proposed BellSouth-LIN cellular company, including the newly acquired Metromedia stake, would give the new entity 55 million potential customers, including about 35 million in the nation's top 10 markets. Mr. Leon of Bear Stearns speculated that McCaw, in an attempt to buy time, might consider filing an antitrust suit against BellSouth with the Justice Department and U.S. District Judge Harold Greene, who oversees enforcement of the consent decree that broke up the Bell system in 1984. Question: What needs to happen before filing an antitrust suit? Events: ['proposed', 'acquired', 'give', 'speculated', 'attempt', 'buy', 'consider', 'filing', 'oversees', 'enforcement', 'decree', 'broke']
A: 
attempt