QUESTION: Test for natural language inference.
Premise: "A man about to throw a tennis ball to a brown dog in the grass."
Hypothesis: "A man is going to throw a ball for the dog because the dog enjoys playing fetch."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Not all dogs enjoy playing fetch. Tennis balls aren't only used for a dog who enjoys fetch.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A dark-skinned male with dark hair stands outside of a building with a display of sunglasses in one hand and one hand above his head." is it true that "A man sells sunglasses to tourists."?
The man with a display of sunglasses may not be selling sunglasses to tourists. Maybe he is selling them to businesses.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A black and white dog is playing with a frisbee outside."
Hypothesis: "Dog playing outside."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: A black and white dog is a dog playing with a frisbee outside means the dog is outside.
The answer is yes.

QUESTION: Can we conclude from "Two kids running over a sand dune." that "Two children are running outside."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Sand dune is a mound of sand. So running over a sand dune implies children are running outside.
The answer is yes.

[QUESTION] Premise: "A crowd of people looking towards a person in a gorilla costume inside a building."
Based on this premise, can we conclude that the hypothesis "The gorilla is in a zoo with other animals." is true?
Options:
- yes
- it is not possible to tell
- no
The people and the person in costume are humans and not the same species as the gorilla or the other animals.
The answer is no.

Q: Premise: "A man tries to take a stick away from a brown dog."
Hypothesis: "The man tried to get the dog to play catch."
Do we know that the hypothesis entailed by the premise?
A:
A man who is taking a stick from a dog is not necessarily trying to play catch.
The answer is it is not possible to tell.