Leo: Premise: "Body surfing at the concert."
Based on this premise, can we conclude that the hypothesis "A concert performer body surfing in a crowd of fans." is true?
Options:
- yes
- it is not possible to tell
- no
Mei: OK, So, let's think first...
Me:
Not all body surfers are concert performers. Not all body surfing happens in a crowd of fans.
Thus, the answer is it is not possible to tell.