CREATE TABLE table_70203 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

What is the chassis for a 1952 officine alfieri maserati with an entrant?
SELECT "Chassis" FROM table_70203 WHERE "Entrant" = 'officine alfieri maserati' AND "Year" = '1952'
SELECT "Chassis" FROM "table_70203" WHERE "Entrant" = 'officine alfieri maserati' AND "Year" = '1952'