Why is an umbrella useful?
The top of an umbrella is made with waterproof material attached to a long handle so that it extends over the head and protects its owner from rain. The material folds down so that it can be easily carried when not needed. Often, the handle also collapses so that the umbrella becomes small enough to fit into a bag.
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: Why is an umbrella useful?
### Input: 
### Response: The top of an umbrella is made with waterproof material attached to a long handle so that it extends over the head and protects its owner from rain. The material folds down so that it can be easily carried when not needed. Often, the handle also collapses so that the umbrella becomes small enough to fit into a bag.