What is the first evidence of a boomerang?
Earliest evidence of the boomerang in Australia was about 20,000 years ago.
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 the first evidence of a boomerang?
### Input: 
### Response: Earliest evidence of the boomerang in Australia was about 20,000 years ago.