[QUESTION] Given the sentence "A band is playing outside." is it true that "A singer plays in a bar."?
It is either a singer or a band. They are either outside or inside in a bar.
The answer is no.

[QUESTION] Premise: "A group of people are sitting around a table in a restaurant."
Hypothesis: "Some people at a table."
Do we know that the hypothesis entailed by the premise?
To be sitting around a table is to be at a table.
The answer is yes.

[QUESTION] Premise: "A woman is rounding a corner in a roller derby."
Hypothesis: "The woman is inside of a car."
Do we know that the hypothesis entailed by the premise?
A woman in a roller derby would not be inside of a car.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A child brushes a play crocodiles teeth."
Hypothesis: "The child is pretending to be a veterinarian."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Just because a boy brushes a play crocodiles teeth doesn't imply child is pretending to be a veterinarian.
The answer is it is not possible to tell.