What is a spiral staircase?
A spiral staircase is a set of stairs that circles around a central pole and allows for a steeper ascent than other stair designs.
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: What is a spiral staircase?
### Input: 
### Response: A spiral staircase is a set of stairs that circles around a central pole and allows for a steeper ascent than other stair designs.