One cannot assume that the two men are a two man band singing a gun's 'n' roses song at a karaoke bar.


Context: A man in a white shirt sings into a microphone as he reads the words on a screen, while a balding man plays the drums.
Hypothesis: A two man band is singing the Gun's 'n' roses classic "Knocking on heaven's door" at a karaoke bar.

Given this context, determine if the hypothesis is true (Yes, no, or unknown)?