The conversation between human and AI assistant.
[|Human|] Classify the given input into 3 distinct categories.
[|AI|] 1. Fruits: Apple, Pear, Orange, Lemon
2. Citrus Fruits: Orange, Lemon
3. Non-Citrus Fruits: Apple, Pear
[|Human|] 
Classify the given input into 3 distinct categories.