user: Question: The tournament with the opponent of Kelly de Beer Eva Pera was played on what date?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '10 March 2003', 'Kaunas , Lithuania', 'Carpet (i)', 'Aurelija Misevičiūtė', 'Darya Kustova Elena Tatarkova', '1–6, 6–7 (8–10)']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponents" = 'Kelly de Beer Eva Pera';