QUESTION: Given the sentence "People gathered to look at trains." is it true that "People have gathered near a train."?

Let's solve it slowly: People gathered to look at trains are not necessarily near a train.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A nice brick and stone building outside with a woman seen walking a baby carriage." can we conclude that "A woman is walking with her baby."?
Options:
- yes
- it is not possible to tell
- no
A woman seen walking a baby carriage is with her baby.
The answer is yes.

Q: Given the sentence "A woman wearing a purple dress with a blue backpack fixes her hair while wearing sunglasses." is it true that "A woman is adjusting her hair."?
A: A woman could be wearing a purple dress and have blue backpack and sunglasses.
The answer is yes.

QUESTION: Test for natural language inference.
Premise: "A man is laying down at the bottom of some stairs and is accompanied by pigeons and a tree."
Hypothesis: "A man standing on top of a roof feeding the birds."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man cannot be laying down and standing at the same time.
The answer is no.

[QUESTION] If "Closeup of the side of an old woman's face with oversized sun blocking glasses." does that mean that "Gray hair and a gold earring."?
Options:
- yes
- it is not possible to tell
- no
Closeup of the side of an old woman's face in the sunlight.
The answer is it is not possible to tell.

Q: Given the sentence "Two little girls playing in the parking lot." can we conclude that "Two girls are brushing their teeth."?
Options:
- yes
- it is not possible to tell
- no
A:
The girls can't be playing in the parking lot if they're brushing their teeth.
The answer is no.