CREATE TABLE table_79599 ("Heat" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" TEXT)

What is the time in a heat smaller than 5, in Lane 5, for Vietnam?
SELECT "Time" FROM table_79599 WHERE "Heat" < '5' AND "Lane" = '5' AND "Nationality" = 'vietnam'
SELECT "Time" FROM "table_79599" WHERE "Heat" < '5' AND "Lane" = '5' AND "Nationality" = 'vietnam'