user: Question: What opening date has a capacity of 100?
Columns: ['Theatre', 'Current show', 'Classification', 'Capacity', 'Opening date', 'Closing date']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Adelphi Theatre', 'The Bodyguard', 'Musical', 1500.0, '2012-12-05 5 December 2012', 'Open-ended']
SQL:

assistant: SELECT "Opening date" FROM "Table" WHERE "Capacity" = 100.0;