CREATE TABLE table_name_70 (points NUMBER, entrant VARCHAR2, year VARCHAR2)

What is the total points that an 1951 Entrant alfa romeo spa have?
SELECT SUM(points) FROM table_name_70 WHERE entrant = "alfa romeo spa" AND year < 1951
SELECT SUM("points") FROM "table_name_70" WHERE "alfa romeo spa" = "entrant" AND "year" < 1951