Q: Given the sentence "A black man is watching another black man playing in the waterfall." can we conclude that "A guy is watching his friend be engulfed by water."?
Options:
- yes
- it is not possible to tell
- no
A: Just because it is two black men does not mean that they are friends. The second man does not have to be a friend of the first man.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "Several people holding mops standing around two yellow mop buckets." that "Several people are cleaning."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Mops and mop buckets are tools that would be used while cleaning.
The answer is yes.

[QUESTION] Can we conclude from "Two people about to cross a street." that "The people are moving their legs."?
Options:
- yes
- no
- it is not possible to tell
Two people about to cross the street. signifies that very shortly they will be moving their legs.
The answer is yes.

Q: Can we conclude from "A woman shows her son how to use a sewing machine." that "A woman doesn't show a sewing machine."?
Options:
- yes
- no
- it is not possible to tell
A: A person can not show and not show a sewing machine to a boy simultaneously.
The answer is no.

QUESTION: Test for natural language inference.
Premise: "The man in the blue shirt is looking in the direction to which the little boy is pointing."
Hypothesis: "The man is ignoring the boy."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man cannot be ignoring a boy if he is looking in the direction to which the boy is pointing.
The answer is no.

QUESTION: Premise: "A man with work clothes on standing on the back of a truck."
Hypothesis: "The farmer is just about to jump off his truck to start his work day."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
Standing on back of a truck does not necessarily mean he will jump off.
The answer is it is not possible to tell.