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

### Instruction:
What is the average Season when the venue was circuit de nevers magny-cours, and Drivers was more than 30?

### Inputs:
table_name: table, columns: ['Season', 'Venue', 'Teams', 'Drivers', 'Champion', 'Second', 'Third']

### Response:
SELECT AVG Season FROM table WHERE Venue = circuit de nevers magny-cours AND Drivers > 30