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

### Instruction:
What is the average number of borough councilors from Brompton?

### Inputs:
table_name: table, columns: ['Borough', 'Components', 'Population', 'Number of Borough Councilors', 'Number of Municipal Councilors']

### Response:
SELECT AVG Number of Borough Councilors FROM table WHERE Borough = brompton