CREATE TABLE table_56954 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Tyre" CLOB, "Driver" CLOB, "Rounds" CLOB)

Who constructed Gerhard Berger car that went all rounds?
SELECT "Constructor" FROM table_56954 WHERE "Rounds" = 'all' AND "Driver" = 'gerhard berger'
SELECT "Constructor" FROM "table_56954" WHERE "Driver" = 'gerhard berger' AND "Rounds" = 'all'