user: Question: What is the total of roles that George Olmi plays in Savoy & Casino Theatre 1888?
Columns: ['Role', 'Savoy Theatre 1888', 'Casino Theatre 1888', 'Savoy Theatre 1897', 'Savoy Theatre 1906', 'Savoy Theatre 1909']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Lieutenant', 'Wallace Brownlow', 'George Broderick', 'Jones Hewson', 'Alec Johnstone', 'Leo Sheffield']
SQL:

assistant: SELECT "Savoy Theatre 1888" FROM "Table" WHERE "Casino Theatre 1888" = 'George Olmi';