[QUESTION] Given the sentence "A welder is welding on a pipe with sparks flying." is it true that "A welder is welding."?
If a welder is welding then it would be a welder who is welding.
The answer is yes.

Q: Test for natural language inference.
Premise: "These people are walking and working outside in a field."
Hypothesis: "The people are wearing straw hats."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Just because these people are walking and working outside in a field does not mean that they are wearing straw hats.
The answer is it is not possible to tell.

QUESTION: Premise: "Four men tearing off a roof."
Based on this premise, can we conclude that the hypothesis "Four men tearing off a roof to alternate." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The fact that men tearing off A Roof doesn't imply to alternate.
The answer is it is not possible to tell.

[QUESTION] Premise: "A hiker jogs down a rocky road while blue skies and mountains cross the horizon."
Hypothesis: "The person is indoors looking at tv."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
One cannot be indoors and jogging down a road or while outdoors.
The answer is no.

Q: Given the sentence "A woman in sunglasses and a black dress holds her hand to her mouth." can we conclude that "A woman holds her mouth in disgust at the man."?
Options:
- yes
- it is not possible to tell
- no
A: Holding hands to mouth can be for different reasons and not for disgust only.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A team of divers are gathered around underwater during the daytime." can we conclude that "A group of divers investigate a wreckage."?
Options:
- yes
- it is not possible to tell
- no
Divers can go underwater for other reasons than to investigate a wreckage.
The answer is it is not possible to tell.