Encode a message using a Caesar cipher with key 5.
The secret is hidden in the attic
Ymj xjhwjy nx mtbqjx qnkj ymfyf
Complete the following task based on the instruction and optional input provided.### Instruction:
Encode a message using a Caesar cipher with key 5.

### Input:
The secret is hidden in the attic

### Output:
Ymj xjhwjy nx mtbqjx qnkj ymfyf