[QUESTION] Given the sentence "One guy playing his instrument." is it true that "One guy is playing a guitar."?
Just because the guy play a instrument doesn't mean he playing a guitar.
The answer is it is not possible to tell.

Q: Premise: "A man wearing a white t-shirt and blue overalls is walking down the street."
Hypothesis: "The man is walking home."
Do we know that the hypothesis entailed by the premise?
A: Because the man is walking on the street doesn't mean his going home.
The answer is it is not possible to tell.

QUESTION: If "A woman paints mountains while observing the mountains." does that mean that "A woman paints mountains."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: If a woman painting is observing the mountains it is likely that she is painting the mountains.
The answer is yes.

[QUESTION] Can we conclude from "A man and a little boy who is holding hammer are making something out of the wooden boards." that "A man and a boy are making a box together."?
Options:
- yes
- no
- it is not possible to tell
Many things can be made out of a hammer and wooden boards so they may not necessarily be making a box.
The answer is it is not possible to tell.

Q: If "A lady and her large brown and black dog out for a run in a grassy place." does that mean that "The woman was at work."?
Options:
- yes
- it is not possible to tell
- no
A: The woman can either be out for a run or at work.
The answer is no.

[QUESTION] Can we conclude from "Africans of all ages singing their hearts out surrounded by mother nature." that "A group of africans are sleeping in their homes."?
Options:
- yes
- no
- it is not possible to tell
People who are singing cannot be sleeping. Surrounded by mother nature implies being outdoors so people would not be in their homes.
The answer is no.