Yes / no, is the following a verifiable fact?
"Nostradamus predicted the rise and fall of the man we now know as Justin Bieber or J-Biebs as Nostradamus calls him in his writings." Step-by-step reasoning process:
I'm pretty sure Justin Bieber was never in a Nostradamus prophacy but then again, there are so many he might actually be in one. Therefore, the final answer is no.