user: Question: On what date was the asset acquisition that was announced on February 22, 2007 completed?  
Columns: ['Asset Acquired', 'Acquired From', 'Date Announced', 'Date Completed', 'Reported Cost']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['mPower.com, Inc', 'Privately Held', 'May 30, 2003', 'July 2, 2003', 'Not Disclosed']
SQL:

assistant: SELECT "Date Completed" FROM "Table" WHERE "Date Announced" = 'February 22, 2007';