Please answer the following question by reasoning step-by-step.
Given the sentence "A young man is performing a roller-blade jump in front of a glass building." is it true that "A man on roller-blades for the first time."?

it is not possible to tell
A man who performs a roller-blade jump in front of a glass building is not necessarily on roller-blades for the first time.

.

Therefore, the answer is it is not possible to tell