Which of the following numbers is a irrational number: -200, -1.5, -1, 0, 1, 1.5, 200, pi, e, sqrt(-1)?
Square root of -1 is an irrational number
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Which of the following numbers is a irrational number: -200, -1.5, -1, 0, 1, 1.5, 200, pi, e, sqrt(-1)?
### Input: 
### Response: Square root of -1 is an irrational number