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 ( rating INTEGER, night_rank VARCHAR, timeslot_rank VARCHAR )

### Question ###
What is the rating for the episode with the night rank of 11 and timeslot rank is larger than 4?

### Accurate SQL ###

SELECT AVG(rating) FROM table_name_51 WHERE night_rank = "11" AND timeslot_rank > 4