Yes / no, is the following a verifiable fact?
"Axl Rose sang as part of the hard rock band Guns N' Roses."
Chain of thought and solution for this question is:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Axl Rose was the lead vocalist of Guns N' Roses.
So, the answer is yes.