Question: What's Australia's time in the heat more than 4?
SQL: SELECT "Time" FROM "2-18625553-3" WHERE "Heat" > 4.0 AND "Nationality" = 'Australia';

Question: What's Sara Isakovič's lane number that had a heat of 3?
SQL: SELECT SUM("Lane") FROM "2-18625553-3" WHERE "Heat" = 3.0 AND "Name" = 'Sara Isakovič';

Question: What's the heat that was timed 2:08.54?
SQL: SELECT COUNT("Heat") FROM "2-18625553-3" WHERE "Time" = '2:08.54';