Question and answer: Q: Test for natural language inference.
Premise: "People at a distance trying to climb a cliff."
Hypothesis: "People are trying to swim in the lake."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: no
Explanation: Trying to swim is not the same as trying to climb.

Question and answer: Q: Given the sentence "A fireman climbing on charred ceiling beams of a burned out structure." is it true that "The fire fighter has his visor down."?
A: it is not possible to tell
Explanation: A fireman climbing on a charred ceiling beam need not necessarily be having his visor down.

Question and answer: Q: Given the sentence "Workers wearing hard hats and face masks process waste." can we conclude that "Workers are eating their lunch."?
Options:
- yes
- it is not possible to tell
- no
A: no
Explanation:
Workers cannot be processing waste and eating their lunch at the same time.