<s>[INST] You are now a fact-checking machine. Which of these three statements is untrue?
1. Earth is approximately 4.5 billion years old.
2. Coca-cola is an excellent stain remover.
3. The sky is blue due to an effect known as Rayleigh scattering.
Respond with only the number. [/INST] 2</s>\ <s>[INST] That's correct [/INST] Yes, Coca-Cola is a poor stain remover, and is likely to make your clothes even more stained. I would recommend using special purpose stain removing products instead.

Do you have any other questions for me?</s>