user: Question: Who has a 50m split less than 27.79?
Columns: ['Lane', 'Name', 'Nationality', '50m split', 'Time']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [5.0, 'Brendan Hansen', 'USA', 27.67, '00: 59.80']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "50m split" < 27.79;