Question: Please list the sequence of events leading up to President Trump's conflict with Chairman Powell regarding the FRB's renovation costs, based on their statements.
Answer: Mr. Trump pointed out the renovation cost as "$3.1 billion" → Chairman Powell denied, saying "I don't know" → Mr. Trump presented documents → Chairman Powell looked at the documents and acknowledged the figure of "$3.1 billion", but explained that it included the cost of another building → Mr. Trump refuted that explanation → Chairman Powell again corrected that it was the cost of another building completed five years ago.