user: Question: What was the duration of Daniela Ryf's swimming stage?
Columns: ['Athlete', 'Event', 'Swim (1.5km)', 'Trans 1', 'Bike (40km)', 'Trans 2', 'Run (10km)', 'Total Time', 'Rank']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Reto Hug', "Men's", '18:55', '0:27', '58:20', '0:29', '33:53', '1:52:04.93', 29.0]
SQL:

assistant: SELECT "Swim (1.5km)" FROM "Table" WHERE "Athlete" = 'Daniela Ryf';