Given the sentence "A man with long hair is playing a guitar." is it true that "A hippie plays a cover of a led zeppelin song at a concert."?
Let's be accurate as possible. Think before you answer.
it is not possible to tell
A man with long hair doesn't necessarily mean a hippie.

The fact that a man with long hair is playing a guitar doesn't imply that he plays a cover of Led Zeppelin song at a concert.

.

So, the answer is it is not possible to tell