Question and answer: Q: Premise: "A man belaying down a waterfall."
Based on this premise, can we conclude that the hypothesis "A man is falling down a waterfall." is true?
Options:
- yes
- it is not possible to tell
- no
A: it is not possible to tell
Explanation: Because a man laying down on waterfall doesn't mean he is falling down.

Question and answer: Q: Premise: "Boy swimming in blue pool."
Based on this premise, can we conclude that the hypothesis "Boy watching tv inside." is true?
Options:
- yes
- it is not possible to tell
- no
A: no
Explanation: Swimming in a pool usually occurs outside while watching TV occurs inside. These activities cannot be done simultaneously.

Question and answer: Q: Premise: "A woman wearing a gas mask is sitting behind a sewing machine sewing."
Based on this premise, can we conclude that the hypothesis "There is a women sowing indoors." is true?
Options:
- yes
- it is not possible to tell
- no
A: it is not possible to tell
Explanation:
Sitting behind a sewing machine does not imply sewing (sowing) or being indoors.