Categorize the following list of items: apple, banana, cow, airplane
Fruit: 
- apple
- banana

Animal: 
- cow

Transportation:
- airplane
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the following list of items: apple, banana, cow, airplane

### Output:
Fruit: 
- apple
- banana

Animal: 
- cow

Transportation:
- airplane