[QUESTION] Given the sentence "Two people silhouetted against a lake at sunset." is it true that "A couple enjoying a romantic sunset in front of a lake."?
Not every sunset is romantic and not every two people are a couple.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A man casting a fishing pole."
Hypothesis: "A man is fishing."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: When you've finished casting your line from your fishing pole you are now fishing.
The answer is yes.

QUESTION: Premise: "A mountain biker rides through a bike path."
Hypothesis: "A biker ride through a dangerous path."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: A mountain biker rides through a bike path does not indicate that he rides through a dangerous path.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A man in black plays the harmonica." can we conclude that "A man in black strums his guitar."?
Options:
- yes
- it is not possible to tell
- no
The man in the first sentence plays the harmonica while the man in the second sentence strums his guitar.
The answer is no.

Q: Premise: "A person attempting a stunt using a snowboard and some wooden pallets while it is dark outside with snow on the ground."
Hypothesis: "A person is sleeping in his bed."
Do we know that the hypothesis entailed by the premise?
A: A person will not be using a snowboard if they are sleeping.
The answer is no.

[QUESTION] Premise: "A musician with dreadlocks is preparing to play a guitar with a band."
Hypothesis: "A guitar is playing itself near a musician."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A guitar cannot be playing itself while a musician is preparing to play simultaneously.
The answer is no.