CREATE TABLE table_204_71 (id DECIMAL, "rank" DECIMAL, "heat" DECIMAL, "name" TEXT, "nationality" TEXT, "time" TEXT, "notes" TEXT)

what is the time difference in seconds between rachel king and sriyani kulawansa ?
SELECT ABS((SELECT "time" FROM table_204_71 WHERE "name" = 'rachel king') - (SELECT "time" FROM table_204_71 WHERE "name" = 'sriyani kulawansa'))
SELECT ABS((SELECT "time" FROM "table_204_71" WHERE "name" = 'rachel king') - (SELECT "time" FROM "table_204_71" WHERE "name" = 'sriyani kulawansa'))