CREATE TABLE table_203_406 (id NUMBER, "entrant" CLOB, "constructor" CLOB, "chassis" CLOB, "engine" CLOB, "tyre" CLOB, "driver" CLOB, "rounds" CLOB)

what was the average tyre used in the race ?
SELECT DISTINCT "tyre" FROM table_203_406
SELECT DISTINCT "tyre" FROM "table_203_406"