[QUESTION] Premise: "A man climbs a steep rock wall using safety ropes."
Hypothesis: "A man is outside climbing a rock wall."
Do we know that the hypothesis entailed by the premise?
A man climbs a steep rock wall using safety ropes does not indicate that he is outside climbing a rock wall.
The answer is it is not possible to tell.

Q: If "An asian women is practicing martial arts in a pink uniform." does that mean that "The woman is wearing pink."?
Options:
- yes
- it is not possible to tell
- no
A: If she is in a oink uniform she is wearing pink.
The answer is yes.

QUESTION: If "A united states postal service street side mailbox is spray painted with graffiti." does that mean that "The mailbox is clean."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: If the mailbox is spray painted with graffiti then it is not clean.
The answer is no.

[QUESTION] Given the sentence "A man protests in support of a cause." is it true that "A man supports a cause he is affected by."?
Not all causes for protest are causes protesters are affected by.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A woman and her children departing a train."
Hypothesis: "A family leaves by train."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The family leaves by train because they are on a departing train.
The answer is yes.

[QUESTION] Given the sentence "A teenager sorts through his mail while sitting in a messy room." can we conclude that "A teenager is looking for a college acceptance letter."?
Options:
- yes
- it is not possible to tell
- no
A college acceptance letter is not the only kind of mail. The teen could be looking for any kind of mail.
The answer is it is not possible to tell.