Q: Given the sentence "Two men dressed in black pants and shirts are lounging outside a door." is it true that "Two men are dressed in black pants because it is cold."?
A: The men are dressed in black pants but not necessarily because it is cold.
The answer is it is not possible to tell.

QUESTION: If "A gentleman observing the market while holding his camera." does that mean that "A news photographer is on assignment to cover a street market."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Not all gentlemen are a news photographer and just because a gentleman is observing the market doesn't imply on assignment.
The answer is it is not possible to tell.

[QUESTION] If "People pass each other on a busy city street while talking on their cellphones." does that mean that "There are people walking along the street."?
Options:
- yes
- it is not possible to tell
- no
If people pass each other while talking on their cellphones they are waling along the street.
The answer is yes.

Q: Test for natural language inference.
Premise: "Four men leaning over a green fence and smiling."
Hypothesis: "The men are brothers."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Not all four men leaning over a green fence and smiling are brothers.
The answer is it is not possible to tell.

QUESTION: Premise: "Some people in desert garb are standing on and next to rugs and cloth."
Hypothesis: "People buying junk off the internet."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Standing next to rugs and cloth is not buying junk off the internet.
The answer is no.

QUESTION: Premise: "A smiling post office worker proudly shows off his four wheeled mailbag carrier."
Hypothesis: "A snarling postal worker throws his mailbag across the room."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
The worker that proudly shows off his four wheeled mailbag carrier cannot be the same that throws it across the room.
The answer is no.