CREATE TABLE table_21264 ("Athlete" TEXT, "Event" TEXT, "Swim  ( 1.5km ) " TEXT, "Trans 1" TEXT, "Bike  ( 40km ) " TEXT, "Trans 2" TEXT, "Run  ( 10km ) " TEXT, "Total Time" TEXT, "Rank" FLOAT)

What was the duration of Daniela Ryf's swimming stage?
SELECT "Swim (1.5km)" FROM table_21264 WHERE "Athlete" = 'Daniela Ryf'
SELECT "Swim (1.5km)" FROM "table_21264" WHERE "Athlete" = 'Daniela Ryf'