The conversation between human and AI assistant.
[|Human|] Categorize the following words as fruits or vegetables: blueberries, onion, tomatoes, grapefruit.
[|AI|] - Fruits: blueberries, tomatoes, grapefruit
- Vegetables: onion
[|Human|] 
Categorize the following words as fruits or vegetables: blueberries, onion, tomatoes, grapefruit.