Q: Can we conclude from "An african girl smiles widely as she eats a big spoonful of grits." that "An african girl has a closed mouth."?
Options:
- yes
- no
- it is not possible to tell
A: One can not be smiles as she eats with a closed mouth simultaneously.
The answer is no.

Q: Given the sentence "A person holding a tennis racket hits a yellow tennis ball." can we conclude that "The person is throwing a baseball."?
Options:
- yes
- it is not possible to tell
- no
A: A person cannot hold a tennis racket while throwing a baseball.
The answer is no.

Q: Given the sentence "A shot of the university of pittsburgh near a bus stop." can we conclude that "The bus stop area displays a picture of the university of pittsburgh."?
Options:
- yes
- it is not possible to tell
- no
A: A picture can be present without being one of the formal displays.
The answer is it is not possible to tell.

Q: If "A group of black boys in a classroom setting wearing white shirts." does that mean that "Listening to a speech about unicef."?
Options:
- yes
- it is not possible to tell
- no
A:
A group of high school students hear about the advantages of donating to UNICEF.
The answer is it is not possible to tell.