CREATE TABLE table_name_94 (entrant VARCHAR2, chassis VARCHAR2, year VARCHAR2)

What entrant had a chassis of Maserati 250f in 1954?
SELECT entrant FROM table_name_94 WHERE chassis = "maserati 250f" AND year = 1954
SELECT "entrant" FROM "table_name_94" WHERE "chassis" = "maserati 250f" AND "year" = 1954