user: Question: What was the outcome on 13 May 2007?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Partner', 'Opponents in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '18 September 2000', 'Greenville , United States', 'Clay', 'Evgenia Subbotina', 'Kristy Blumberg Elizabeth Schmidt', '6-2, 6-2']
SQL:

assistant: SELECT "Outcome" FROM "Table" WHERE "Date" = '13 May 2007';