user: Question: Tell me the date for opponents of Raffaella Bindi Biljana Pawlowa-Dimitrova
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '21 May 2007', 'Vienna , Austria', 'Clay', 'Teliana Pereira', 'Katarína Poljaková Zuzana Zlochová', '7–6 (7–1) , 6–3']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponents" = 'Raffaella Bindi Biljana Pawlowa-Dimitrova';