Q: Premise: "A man riding on the back of a trash truck."
Hypothesis: "The man is a city sanitation employee."
Do we know that the hypothesis entailed by the premise?
A: Sentence one states the man is riding in the back of a trash truck. Just because he is a sanitation employee doesn't mean he rides in the back of a trash truck.
The answer is it is not possible to tell.

QUESTION: Given the sentence "Female fire dancer performing in the middle of a city street with a crowd watching." is it true that "A female is performing on a city street."?

Let's solve it slowly: The fire dancer can be performing on a city street or the middle of a city street.
The answer is yes.

[QUESTION] Test for natural language inference.
Premise: "A waiter reviewing an order to make sure it is correct."
Hypothesis: "The waiter is filling up a glass of water."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A waiter who is reviewing an order would not be filling a glass at the same time.
The answer is no.

Q: Premise: "A guy standing looking into the windows of a nearby building."
Hypothesis: "The man is window shopping."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: Looking into the windows of a building does not imply window shopping.
The answer is it is not possible to tell.

QUESTION: If "A man stands on the edge of a cliff overhanging the ocean." does that mean that "A guy plans to jump off a cliff overhanging the ocean."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Just because A man stands on the edge of a cliff overhanging the ocean does not indicate that he plans to jump off a cliff overhanging the ocean.
The answer is it is not possible to tell.

QUESTION: Premise: "A big dog is running in the grassy field with woods behind him."
Hypothesis: "An animal runs in a field."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
A dog running in a grassy field is an animal running in a field.
The answer is yes.