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_39 ( overall_rank INTEGER, share VARCHAR, timeslot_rank VARCHAR )

### Question ###
What is the rank of the episode with a share of 6 and timeslot rank smaller than 4?

### Accurate SQL ###

SELECT AVG(overall_rank) FROM table_name_39 WHERE share = 6 AND timeslot_rank < 4