Identify which instrument is string or percussion: Tan-tan, Ruan
Ruan is string, Tan-tan is percussion.
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: Identify which instrument is string or percussion: Tan-tan, Ruan
### Input: 
### Response: Ruan is string, Tan-tan is percussion.</s>