A skateboarder props up on a pole does not imply that he competes in a tournament.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Given the sentence "A skateboarder props up on a pole just before descending." can we conclude that "A skateboarder competes in a tournament."?
Options:
- yes
- it is not possible to tell
- no
it is not possible to tell