<|im_start|>user
What is the color of silicon.

Context:
Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive.<|im_end|>
<|im_start|>assistant
blue-grey<|im_end|>
