user: Question: What is the Heat of the 34 Rank swimmer with a Time of 49.49 or less?
Columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'real', 'text', 'text', 'real']
Sample row: [1.0, 8.0, 4.0, 'Eamon Sullivan', 'Australia', 47.8]
SQL:

assistant: SELECT "Heat" FROM "Table" WHERE "Rank" = 34.0 AND "Time" < 49.49;