[QUESTION] Given the sentence "A blond woman with a white tank top and white pants is holding a receipt while standing in a lobby with doors behind her." can we conclude that "A woman is holding a receipt of her last purchase."?
Options:
- yes
- it is not possible to tell
- no
The receipt could be anyone's and not necessarily her's of her last purchase.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A man in a helmet is hanging onto the side of a transit vehicle." can we conclude that "A man is helping pick up garbage."?
Options:
- yes
- it is not possible to tell
- no
The man could be hanging on a vehicle without needing to pick up garbage.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A man with a mustache wearing a black and red plaid shirt plays guitar." can we conclude that "A flutist plays a flute."?
Options:
- yes
- it is not possible to tell
- no
The man who plays a guitar cannot be the man who plays a flute at the same time.
The answer is no.

[QUESTION] Given the sentence "A gray dog runs along the green grass." is it true that "A gray dog runs after something in the green grass."?
A dog can run for many reasons and not only if it is after something.
The answer is it is not possible to tell.