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

### Instruction:
If there are 18 villages, what is the minimum area ?

### Inputs:
table_name: table, columns: ['Nr.', 'District', 'Former Name', 'Area ( ha )', 'Population (2005)', 'No. of villages', 'Density persons / ha']

### Response:
SELECT MIN Area ( ha ) FROM table WHERE No. of villages = 18