user: Question: What is the date of the tournament with Alena Tarasova as the opponent?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '19 May 2009', 'Antalya , Turkey', 'Clay', 'Amanda Carreras', '6–7 (7–9) , 7–6 (7–2) , 4–6']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = 'Alena Tarasova';