[QUESTION] Given the sentence "Children at a riverbank stand near an umbrella." is it true that "A child stares at a poster of a riverbank."?
There are either multiple children or there is one child. The child is either at the riverbank or staring at a picture of one.
The answer is no.

Q: If "A street performer rides a high unicycle in front of a young boy while holding two pins in front of a crowd." does that mean that "A street performer walks on a tightrope."?
Options:
- yes
- it is not possible to tell
- no
A: The performer cannot ride a unicycle while he walks on a tightrope.
The answer is no.

QUESTION: Can we conclude from "A hockey player in a yellow jersey is guarding the goal." that "The player is trying to score."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: One cannot be guarding the goal while trying to score goal.
The answer is no.

[QUESTION] Given the sentence "A girl is dancing with a green skirt and a bra and people are watching." can we conclude that "The girl is not wearing a a top."?
Options:
- yes
- it is not possible to tell
- no
The girl is in a bra so that means she is not wearing a top.
The answer is yes.

Q: Test for natural language inference.
Premise: "A girl in a red shirt and brown pants is skating."
Hypothesis: "A girl is skating."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: A girl could be a girl in a red shirt and brown pants.
The answer is yes.

[QUESTION] If "A young boy wearing costume hands raises his arms." does that mean that "The boy wants the teacher to help him with his shirt."?
Options:
- yes
- it is not possible to tell
- no
There is no other person in sentence one let alone a teacher.
The answer is it is not possible to tell.