The conversation between human and AI assistant.
[|Human|] Classify each of the following into either a solid, liquid or gas: blood, xenon, gold, wood, neon, brick, milk, xenon, coffee, gases, helium
[|AI|] solid: gold, wood, brick
liquid: milk, blood, coffee
gas: helium, xenon, neon
[|Human|] 
Classify each of the following into either a solid, liquid or gas: blood, xenon, gold, wood, neon, brick, milk, xenon, coffee, gases, helium