Q: Given the sentence "People are fishing on the beach." can we conclude that "People are fishing for trout."?
Options:
- yes
- it is not possible to tell
- no
A: People could be fishing for different kinda of fish than trout.
The answer is it is not possible to tell.

QUESTION: Premise: "A crowd of people walking down the middle of a city street."
Hypothesis: "The group are walking down the street to the cabs."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: People can walk down the street for other reasons than cabs.
The answer is it is not possible to tell.

[QUESTION] If "A man is jumping in water in a plaid shirt." does that mean that "The man jumps in the lake to save an animal."?
Options:
- yes
- it is not possible to tell
- no
The man did not necessarily jump in to save an animal.
The answer is it is not possible to tell.

Q: Given the sentence "Two young girls are smiling and laughing." can we conclude that "The girls are depressed about their college exams."?
Options:
- yes
- it is not possible to tell
- no
A: You would not be smiling if you are depressed because then you would be sad.
The answer is no.

QUESTION: Test for natural language inference.
Premise: "A man kayaking through rapids."
Hypothesis: "The man is kayaking in a river."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: To be kayaking through rapids is to be in a river.
The answer is yes.

QUESTION: Test for natural language inference.
Premise: "Hiker crossing a waterfall."
Hypothesis: "The hiker is heading back to his camp."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
Just because a hiker is crossing a waterfall does not mean he is heading back to camp.
The answer is it is not possible to tell.