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

### Instruction:
On which episode number is event 4 The Wall and event 1 the Pendulum?

### Inputs:
table_name: table, columns: ['Episode Number', 'Air Date', 'Event 1', 'Event 2', 'Event 3', 'Event 4']

### Response:
SELECT COUNT Episode Number FROM table WHERE Event 4 = The Wall AND Event 1 = Pendulum