Categorize the following items
- Orange
- Melon
- Pen
Fruit:
- Orange
- Melon

Stationery:
- Pen.
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the following items

### Input:
- Orange
- Melon
- Pen

### Output:
Fruit:
- Orange
- Melon

Stationery:
- Pen.