QUESTION: Test for natural language inference.
Premise: "A long-haired black and brown dog runs through the grass."
Hypothesis: "A dog napping."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Either the dog runs or is napping. It cannot do both at the same time.
The answer is no.

QUESTION: Test for natural language inference.
Premise: "A young boy in shorts and a t-shirt chasing two birds while a man in shorts and t-shirt follows a few steps behind."
Hypothesis: "A father watches his son chase a bird."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: It could be a father and son or an uncle and his nephew.
The answer is it is not possible to tell.

QUESTION: Given the sentence "A hiker walking near a waterfall." can we conclude that "The hiker is drinking from the waterfall."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
A hiker walking near a waterfall need not be drinking from the waterfall.
The answer is it is not possible to tell.