[QUESTION] Test for natural language inference.
Premise: "Two elderly men standing in front of a projector pull-down screen."
Hypothesis: "Two professors teach a college class."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Elderly men does not imply the men are professors and standing in front of a screen doesn't mean that they teach a college class.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "Two dogs run through grass near a body of water." can we conclude that "The dogs are retrieving a downed bird."?
Options:
- yes
- it is not possible to tell
- no
Not all dogs who run through grass near a body of water are retrieving a downed bird.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A dark man with glasses who is wearing a white shirt is sitting in the middle of small boxes that are filled with various materials." can we conclude that "A man sits in the middle of a bunch of boxes."?
Options:
- yes
- it is not possible to tell
- no
A man sitting in the middle of small boxes must be in the middle of a bunch of boxes.
The answer is yes.

[QUESTION] Test for natural language inference.
Premise: "A snowboarder who is doing a trick."
Hypothesis: "Snowboarder taking a break."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Taking a break means that he is not doing a trick.
The answer is no.