Premise: "An older white man in a black cowboy hat sings into a microphone."\nHypothesis: "He is at a karaoke bar."\nDo we know that the hypothesis entailed by the premise?
Let’s work this out in a step by step way to be sure we have the right answer.
it is not possible to tell
A Karaoke bar is not the only place where a man might sing into a microphone.

.

Therefore, the answer is it is not possible to tell