user: Question: What is the date of the Omloop van de Vlaamse Scheldeboorden race with a UCI rating of 1.1?
Columns: ['Date', 'Race Name', 'Location', 'UCI Rating', 'Winner', 'Team']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1 February', 'Grand Prix Cycliste la Marseillaise', 'France', '1.1', 'Nicki Sörensen ( DEN )', 'Team CSC']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "UCI Rating" = '1.1' AND "Race Name" = 'Omloop van de Vlaamse Scheldeboorden';