Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_70 ( points INTEGER, entrant VARCHAR, year VARCHAR )

### Question ###
What is the total points that an 1951 Entrant alfa romeo spa have?

### Accurate SQL ###

SELECT SUM(points) FROM table_name_70 WHERE entrant = "alfa romeo spa" AND year < 1951