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_14 (entrant VARCHAR, year VARCHAR, chassis VARCHAR)

### Question ###
Who is entered earlier than 1975 and has a Lotus 20 chassis?

### Accurate SQL ###

SELECT entrant FROM table_name_14 WHERE year < 1975 AND chassis = "lotus 20"