CREATE TABLE table_10440 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine" CLOB, "Tyre" CLOB, "Driver" CLOB, "Rounds" CLOB)

Who constructed the car in round 1 with a Chassis of 250F?
SELECT "Constructor" FROM table_10440 WHERE "Chassis" = '250f' AND "Rounds" = '1'
SELECT "Constructor" FROM "table_10440" WHERE "Chassis" = '250f' AND "Rounds" = '1'