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

### Instruction:
What is the least arabs when the metropolitan ring is inner ring 3?

### Inputs:
table_name: table, columns: ['Metropolitan ring', 'Localities', 'Total', 'Jews and others 1', 'Thereof: Jews', 'Arabs', 'Population density (per km²)', 'Annual Population growth rate']

### Response:
SELECT MIN Arabs FROM table WHERE Metropolitan ring = Inner Ring 3