Leo: Premise: "Two men grapple up a waterfall."
Based on this premise, can we conclude that the hypothesis "Some men are watching a ship." is true?
Options:
- yes
- it is not possible to tell
- no
Mei: OK, So, let's think first...
Me:
Men busy grappling up a waterfall are unlikely to be watching something; they would be focused on their task and the water would make it hard to see.
Thus, the answer is no.