What is an excavator?
An excavator is a heavy equipment machine that is used for moving large amount of earth at one time.  They have a boom and a huge bucket attached to them and are essentially a huge shovel used to prepare the ground for huge construction projects.  John Deere is one company that produces excavators.
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 an excavator?
### Input: 
### Response: An excavator is a heavy equipment machine that is used for moving large amount of earth at one time.  They have a boom and a huge bucket attached to them and are essentially a huge shovel used to prepare the ground for huge construction projects.  John Deere is one company that produces excavators.