user: Question: What was the sail number of Two True?
Columns: ['Position', 'Sail number', 'Yacht', 'State/country', 'Yacht type', 'LOA (Metres)', 'Skipper', 'Corrected time d:hh:mm:ss']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'YC400', 'Two True', 'SA', 'First 40', '12.24', 'Andrew Saies', '4:07:57:43']
SQL:

assistant: SELECT "Sail number" FROM "Table" WHERE "Yacht" = 'Two True';