[QUESTION] Given the sentence "A young man wearing a dark suit is giving a lecture to a group of people seated in a classroom." can we conclude that "People are watching a movie in a lecture hall."?
Options:
- yes
- it is not possible to tell
- no
A young man is not exhibiting any show out there in the lecture hall.
The answer is no.

Q: If "A group of people lay in the shade." does that mean that "A group marches down the street."?
Options:
- yes
- it is not possible to tell
- no
A: A group cannot lay in the shade and march down the street simultaneously.
The answer is no.

QUESTION: Premise: "A snowboarder hangs upside down from his board during a maneuver in front of a crowd of people."
Based on this premise, can we conclude that the hypothesis "The skier is doing tricks on his skis as he goes down the mountain." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The skier is doing tricks in front of a crowd of people.
The answer is no.

[QUESTION] Can we conclude from "A man is checking out a wall." that "The man is checking for holes."?
Options:
- yes
- no
- it is not possible to tell
A man is checking out a wall does not indicate that he is checking for holes.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A boy and girl in life jackets ride behind a boat in an innertube."
Hypothesis: "A boy and girl in life jackets ride behind a boat in a tube."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: A tube that is pulled behind a boat is also called an inner tube.
The answer is yes.

[QUESTION] If "A woman in a black leather jacket raises her arms as she sings into a microphone." does that mean that "The woman in the black leather jacket played an instrument."?
Options:
- yes
- it is not possible to tell
- no
A woman sings into a microphone. She did not play an instrument.
The answer is no.