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_66 ( class VARCHAR, year VARCHAR, points VARCHAR )

### Question ###
What class before 1990 has points of 33?

### Accurate SQL ###

SELECT class FROM table_name_66 WHERE year < 1990 AND points = 33