Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Change the background to a medieval castle. Portrait of a Cassowary Cassowary Knight Knight giotto Greg Rutkowski ismail inceoglu tom bagshaw winslow homer charlie bowater sam spratt illustrated colored pencil unreal engine render

### Response:
'Portrait of a Cassowary Cassowary Knight Knight giotto Greg Rutkowski ismail inceoglu tom bagshaw winslow homer charlie bowater sam spratt illustrated colored pencil unreal engine render' - Change the background to a medieval castle.

### End