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_95 (entrant VARCHAR, points VARCHAR, chassis VARCHAR, engine VARCHAR, year VARCHAR)

### Question ###
What kind of Entrant has a Maserati Straight-6 Engine, built in the year 1958 or early, and has a Maserati 250f Chassis with points less than 4?

### Accurate SQL ###

SELECT entrant FROM table_name_95 WHERE engine = "maserati straight-6" AND year < 1958 AND chassis = "maserati 250f" AND points < 4