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_51 ( Id VARCHAR )

### Question ###
What's the 1986 if 1991 has a QF and 1998 has a 3R?

### Accurate SQL ###

SELECT 1986 FROM table_name_51 WHERE 1991 = "qf" AND 1998 = "3r"