QUESTION: Premise: "A classroom of students watching a presentation."
Hypothesis: "No one is in the room."
Do we know that the hypothesis entailed by the premise?

SOLUTION: Let's solve this gradually. If no one is in the room then there are no classroom of students.
Answer is no.

QUESTION: Can we conclude from "A person flipping upside down." that "A person is doing a backflip."?
Options:
- yes
- no
- it is not possible to tell

SOLUTION: Let's solve this gradually. There are many moves a person may do while flipping upside down which are not necessarily a backflip.
Answer is it is not possible to tell.

QUESTION: Can we conclude from "A skier is in midair with skies crossed after having gone off of a jump." that "A person is skiing at night."?
Options:
- yes
- no
- it is not possible to tell

SOLUTION: Let's solve this gradually. A skier in midair with skies crossed is not necessarily skiing at night.
Answer is it is not possible to tell.

QUESTION: Given the sentence "A boy stands overlooking a schoolyard where other children play." can we conclude that "A boy with a cast on leg wishes he could play with the other kids in the schoolyard."?
Options:
- yes
- it is not possible to tell
- no

SOLUTION:
Let's solve this gradually. The boy that stands is not imply to having a cast on leg.
Answer is it is not possible to tell.