A man breakdancing in front of people doesn't mean he is a street performer.
This justifies what answer for what question? Q & A: 
Premise: "A man in a black shirt and white shorts breakdances in front of onlookers."
Hypothesis: "A man is a street performer."
Do we know that the hypothesis entailed by the premise?
it is not possible to tell
A man breakdancing in front of people doesn't mean he is a street performer.
This justifies what answer for what question? Q & A: 
user
Premise: "A man in a black shirt and white shorts breakdances in front of onlookers."
Hypothesis: "A man is a street performer."
Do we know that the hypothesis entailed by the premise?
it is not possible to tell
assistant
A man breakdancing in front of people doesn't mean he is a street performer.
This justifies what answer for what question? Q & A: 
Premise: "A man in a black shirt and white shorts breakdances in front of onlookers."
Hypothesis: "A man is a street performer."
Do we know that the hypothesis entailed by the premise?
it is not possible to tell