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:
Rank these four national parks in terms of popularity.

### Input:
Grand Canyon National Park, Rocky Mountain National Park, Yosemite National Park, Great Smoky Mountains National Park

### Response:
1. Grand Canyon National Park
2. Great Smoky Mountains National Park
3. Rocky Mountain National Park
4. Yosemite National Park