QUESTION: Given the sentence "A man in mid- air while going down a sand-dune." can we conclude that "The man is skiing in the snow."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: One can ski on snow or a sand-dune but not both.
The answer is no.

[QUESTION] Premise: "A man with a black hat is looking pensively out the window of public transportation."
Hypothesis: "A man is looking out of the window."
Do we know that the hypothesis entailed by the premise?
A man looking pensively can be looking out of the window.
The answer is yes.

Q: Test for natural language inference.
Premise: "Two black and brown dobermans running in a field playing ball."
Hypothesis: "The dogs owner thought that his dobermans needed some exercise."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Dogs in a field would not necessarily be with their owner. Not all dogs are in need of exercise.
The answer is it is not possible to tell.

QUESTION: Given the sentence "People stand on a sidewalk outside of retail stores." is it true that "People were window shopping."?

Let's solve it slowly: Just being on a sidewalk outside of stores doesn't mean you have to be window shopping.
The answer is it is not possible to tell.

[QUESTION] Premise: "A woman is writing on a post-it note stuck on a chart."
Based on this premise, can we conclude that the hypothesis "A woman is writing an important reminder on the sticky note." is true?
Options:
- yes
- it is not possible to tell
- no
Writing on a post-it note is not necessarily for an important reminder.
The answer is it is not possible to tell.

Q: Can we conclude from "A younger boy wearing headphones with a microphone laughs with an older boy wearing a green t-shirt while looking at a computer screen." that "The boy at the computer made the younger boy laugh by showing him a funny video."?
Options:
- yes
- no
- it is not possible to tell
A:
Two boys laughing while looking at a computer does not imply that one boy made the other laugh or that he did so by showing him a funny video.
The answer is it is not possible to tell.