Question and answer: Q: Premise: "Little boy climbing an indoor rock climbing wall."
Based on this premise, can we conclude that the hypothesis "The boy was running around the indoor track." is true?
Options:
- yes
- it is not possible to tell
- no
A: no
Explanation: A boy climbing a climbing wall can't be running around an indoor track at the same time.

Question and answer: Q: Given the sentence "A boy in a red shirt is climbing up a wooden play set." can we conclude that "The boy followed his friend up the play set."?
Options:
- yes
- it is not possible to tell
- no
A: it is not possible to tell
Explanation: It is not clear that the boy followed his friend up the play set while climbing it.

Question and answer: Q: Premise: "A man sitting at a piano singing."
Based on this premise, can we conclude that the hypothesis "A man using his vocal cords to produce sound in a harmonious way." is true?
Options:
- yes
- it is not possible to tell
- no
A: yes
Explanation:
Singing is the act of an animal using vocal cords to produce sound in a harmonious way.