Categorize the following items according to whether they are vegetables, fruits, or grains.
Potatoes
Kiwis
Rice
Vegetables: Potatoes
Fruits: Kiwis
Grains: Rice
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the following items according to whether they are vegetables, fruits, or grains.

### Input:
Potatoes
Kiwis
Rice

### Output:
Vegetables: Potatoes
Fruits: Kiwis
Grains: Rice