[QUESTION] Given the sentence "Chef joey signing a book with a sharpie." is it true that "Chef joey is signing a book for his biggest fan."?
Signing a book does not imply that it is for the Chef's biggest fan.
The answer is it is not possible to tell.

Q: Premise: "A girl climbs through a red plastic tunnel on a playground."
Based on this premise, can we conclude that the hypothesis "A girl is playing on a playground." is true?
Options:
- yes
- it is not possible to tell
- no
A: If the girl climbs through the tunnel it means that she is playing on the playground.
The answer is yes.

QUESTION: Given the sentence "Some children turned backwards while in the audience." can we conclude that "A grandfather teaches his grandson to fish."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Some children cannot be a grandfather. Sitting backwards is not the same as teaching.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A man with dreadlocks is playing with the hair of a woman who is sitting on a chair on a cobblestone street."
Hypothesis: "A couple are sitting in the old city."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A man playing with the hair of a woman on a cobblestone street doesn't necessarily imply couple and doesn't necessarily imply old city.
The answer is it is not possible to tell.

Q: Given the sentence "A lone man sits in a boat in a cave with a group of people watching nearby." is it true that "A man is about to win the bet with his friend by rowing across the lake alone."?
A: No way to know he is about to win the bet.
The answer is it is not possible to tell.

[QUESTION] Premise: "A man with long blond-hair is singing into a microphone."
Hypothesis: "Someone is singing."
Do we know that the hypothesis entailed by the premise?
If a man is singing in a microphone that means that someone is singing.
The answer is yes.