Q: Can we conclude from "Two people posing for a photographer." that "Man and woman posing for their engagement photos."?
Options:
- yes
- no
- it is not possible to tell
A: The two people may not be a man and a woman. Posing for a photograph does have to be for engagement photos.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "A man trying to reach the tennis ball in a tennis game." that "The man is not reaching."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man cannot be trying to reach and not reaching at the same time.
The answer is no.

[QUESTION] Given the sentence "A fleet of small fishing boats coming to shore." is it true that "Boats return after a full day at sea."?
Boats returning does not necessarily mean they were gone a full day nor at sea.
The answer is it is not possible to tell.

Q: Given the sentence "A group of people dressed in armor are standing on the green grass." can we conclude that "A group of people are swimming in the ocean."?
Options:
- yes
- it is not possible to tell
- no
A: A group of people swimming are not dressed in armor. A group of people standing on green grass cannot be in the ocean.
The answer is no.

QUESTION: Test for natural language inference.
Premise: "The man waves to his family from atop the bridge."
Hypothesis: "A family is being waived to."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Waves to his family is a rephrasing of family is being waved to.
The answer is yes.

QUESTION: If "A woman on a surfboard rides a wave." does that mean that "A woman is in the ocean."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
A woman on a surfboard is in the ocean and rides a wave.
The answer is yes.