user: Question: What is the smallest decile with a Name of St Mary's Catholic School?
Columns: ['Name', 'Gender', 'Area', 'Authority', 'Decile']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Aquinas College', 'Coed', 'Pyes Pa', 'State integrated', 9.0]
SQL:

assistant: SELECT MIN("Decile") FROM "Table" WHERE "Name" = 'St Mary''s Catholic School';