CREATE TABLE table_63751 ("Heat" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" TEXT)

What's Australia's time in the heat more than 4?
SELECT "Time" FROM table_63751 WHERE "Heat" > '4' AND "Nationality" = 'australia'
SELECT "Time" FROM "table_63751" WHERE "Heat" > '4' AND "Nationality" = 'australia'