Q: Given the sentence "A man standing in front of several people talking." is it true that "A man saw his friends."?
A: Talking to a group of people does not mean that man saw his friends.
The answer is it is not possible to tell.

QUESTION: Premise: "A male vocalist plays guitar and sings under the spotlight."
Based on this premise, can we conclude that the hypothesis "A man is enjoying himself." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Just because he is singing and playing the guitar does not mean he is enjoying himself.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "A cook in a black shirt and checkered bandanna cooks on an industrial style stove."
Hypothesis: "A cook is cooking on a stove."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A cook cooking on a stove could be using an industrial style stove and could be in a black shirt and bandanna.
The answer is yes.

Q: Premise: "Two women walk down a street with a shopping bag in hand."
Hypothesis: "Two woman just got done shopping."
Do we know that the hypothesis entailed by the premise?
A: They got done shopping because they have a shopping bag in hand.
The answer is yes.

QUESTION: Given the sentence "A group of young and old practice together for an instrumental performance." is it true that "The members of an amateur band are practicing for tryouts to the london symphony orchestra."?

Let's solve it slowly: Practice together for an instrumental performance does not necessarily mean amateur band or that it is for tryouts to the London Symphony Orchestra.
The answer is it is not possible to tell.

QUESTION: Premise: "A woman stands in front of a microphone and addresses a large group."
Hypothesis: "There is a woman speaking."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
A woman speaking implies that a woman is addressing a group.
The answer is yes.