CREATE TABLE table_203_531 (id NUMBER, "date" CLOB, "tournament" CLOB, "location" CLOB, "winner" CLOB, "score" CLOB, "1st prize  ( $ ) " NUMBER)

which tournament rewarded the most money for first prize ?
SELECT "tournament" FROM table_203_531 ORDER BY "1st prize ($)" DESC LIMIT 1
SELECT "tournament" FROM "table_203_531" ORDER BY "1st prize ($)" DESC FETCH FIRST 1 ROWS ONLY