QUESTION: Premise: "Crowd gathered in city park."
Hypothesis: "The crowd was gathered for a orgy in city park."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: A crowd cannot be gathered in city park and be gathered for and orgy in city park at the same time.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A young woman with red-hair."
Hypothesis: "Dressed in purple is holding an envelope as she walks on a city sidewalk."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
The woman is on her way to the post office to mail a letter.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A teenage boy grinds across a bar on his skateboard."
Hypothesis: "A boy is performing tricks on his skateboard for a competition."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The boy doesn't have to be doing tricks or practicing for a competition.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "A woman floats with her face out of water in a pool with another woman nearby posing for the camera."
Hypothesis: "She made record time on the hike up the mountain; primarily because of her swimming routines."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: One cannot float in a pool and hike up the mountain simultaneously.
The answer is no.

[QUESTION] Given the sentence "Young boy is dressed for cold weather." can we conclude that "A boy is building a lego set."?
Options:
- yes
- it is not possible to tell
- no
The boy is either dressed for cold weather or is building a lego set.
The answer is no.

Q: Premise: "A boy performs a high-flying trick with his bicycle on a prepared course."
Hypothesis: "A boy performs the winning trick at the bicycle competition."
Do we know that the hypothesis entailed by the premise?
A:
As the boy performing the winning trick doesn't mean he is participating in a competition.
The answer is it is not possible to tell.