user: Question: On what date was the Individual time trial?
Columns: ['Date', 'Course', 'Distance', 'Type', 'Winner']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['24 May', 'Genoa', 'km (mi)', 'Individual time trial', 'Thierry Marie ( FRA )']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Type" = 'Individual time trial';