CREATE TABLE table_203_83 (id NUMBER, "ranking" NUMBER, "company" CLOB, "industry" CLOB, "revenue  ( usd billions ) " CLOB, "fy" CLOB, "capitalization  ( usd billions ) " CLOB, "employees" NUMBER, "listing" CLOB, "headquarters" CLOB, "ceo" CLOB)

which company is ranked at the top with the largest revenue ?
SELECT "company" FROM table_203_83 ORDER BY "revenue (usd billions)" DESC LIMIT 1
SELECT "company" FROM "table_203_83" ORDER BY "revenue (usd billions)" DESC FETCH FIRST 1 ROWS ONLY