CREATE TABLE table_79381 ("Event" CLOB, "Performance" CLOB, "Nation" CLOB, "Place" CLOB, "Date" CLOB)

Which place had a performance of 19.30 seconds by Jamaica?
SELECT "Place" FROM table_79381 WHERE "Nation" = 'jamaica' AND "Performance" = '19.30'
SELECT "Place" FROM "table_79381" WHERE "Nation" = 'jamaica' AND "Performance" = '19.30'