CREATE TABLE table_15164 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

Which entrant used the chassis de tomaso 505?
SELECT "Entrant" FROM table_15164 WHERE "Chassis" = 'de tomaso 505'
SELECT "Entrant" FROM "table_15164" WHERE "Chassis" = 'de tomaso 505'