Choose the word which is different from the rest:  Sketch, Diagram, Poster, Chart, Paper
Sketch is different from the rest. The others can be written upon.
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: Choose the word which is different from the rest:  Sketch, Diagram, Poster, Chart, Paper
### Input: 
### Response: Sketch is different from the rest. The others can be written upon.