The conversation between human and AI assistant.
[|Human|] How many kilograms are in 4.5 tons?
[|AI|] 1 ton is equivalent to 1000 kilograms, so 4.5 tons is equivalent to 4.5 * 1000 kg = 4500 kilograms.
[|Human|] 
How many kilograms are in 4.5 tons?