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

### Instruction:
Which Rank is the lowest one that has a Borough of richmondshire, and a Population larger than 8,178?

### Inputs:
table_name: table, columns: ['Rank', 'Town', 'Population', 'Year', 'Borough', 'Definition']

### Response:
SELECT MIN Rank FROM table WHERE Borough = richmondshire AND Population > 8,178