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: John Yates, the Metropolitan Police officer leading the investigation into allegations of "cash for honours", said last month that detectives had conducted 90 interviews. Of these, 35 were linked to the governing Labour Party, 29 to the main opposition Conservatives and four to the Liberal Democrats, Britain's third biggest party. Question: What happened after John Yates began leading the investigation? Events: ['leading', 'investigation', 'allegations', 'said', 'conducted', 'had', 'interviews', 'were', 'linked', 'governing']
A:
said