CREATE TABLE table_203_408 (id NUMBER, "rd." NUMBER, "grand prix" CLOB, "date" CLOB, "location" CLOB, "pole position" CLOB, "fastest lap" CLOB, "winning driver" CLOB, "constructor" CLOB, "report" CLOB)

who had pole position the most times ?
SELECT "pole position" FROM table_203_408 GROUP BY "pole position" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "pole position" FROM "table_203_408" GROUP BY "pole position" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY