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

### Instruction:
What is the lowest wk 3 value with an n/r in wk 14, a wk 2 value of 7, and a wk 11 value greater than 18?

### Inputs:
table_name: table, columns: ['Poll', 'Wk 2', 'Wk 3', 'Wk 4', 'Wk 5', 'Wk 6', 'Wk 7', 'Wk 8', 'Wk 9', 'Wk 10', 'Wk 11', 'Wk 12', 'Wk 13', 'Wk 14', 'Final']

### Response:
SELECT MIN Wk 3 FROM table WHERE Wk 14 = n/r AND Wk 2 = 7 AND Wk 11 > 18