Below is an instruction that describes a task. Write a response that appropriately completes the request.

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

### Inputs:
table_name: table, columns: ['Episode', 'Air Date', 'Rating', 'Share', 'Rating/Share 18–49', 'Viewers (m)', 'Timeslot Rank', 'Night Rank', 'Overall Rank']

### Response:
SELECT AVG Overall Rank FROM table WHERE Share = 6 AND Timeslot Rank < 4