CREATE TABLE table_15032 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What is the number of points for the Entrant of escuderia bandeirantes earlier than 1952?
SELECT SUM("Points") FROM table_15032 WHERE "Entrant" = 'escuderia bandeirantes' AND "Year" < '1952'
SELECT SUM("Points") FROM "table_15032" WHERE "Entrant" = 'escuderia bandeirantes' AND "Year" < '1952'