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_84 (format VARCHAR, catalog VARCHAR, date VARCHAR)

### Question ###
What was the format in September 1990 for Catalog 887 847-1?

### Accurate SQL ###

SELECT format FROM table_name_84 WHERE catalog = "887 847-1" AND date = "september 1990"