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_37 ( category VARCHAR, year VARCHAR, role_episode VARCHAR )

### Question ###
What's the category in 1998 with the role/episode of David Duchovny?

### Accurate SQL ###

SELECT category FROM table_name_37 WHERE year = 1998 AND role_episode = "david duchovny"