QUESTION: Given the sentence "A man on an exercise bike that is attached to a video screen." is it true that "A man is exercising on an exercise bike."?

SOLUTION: Let's solve this gradually. The man is on an exercise bike so he must be exercising.
Answer is yes.

QUESTION: Premise: "A surfer rides a breaking wave."
Hypothesis: "A surfer surfs on the water."
Do we know that the hypothesis entailed by the premise?

SOLUTION: Let's solve this gradually. A surfer who rides a breaking wave surfs on the water.
Answer is yes.

QUESTION: Premise: "A blond performer is standing on stage in a white outfit."
Based on this premise, can we conclude that the hypothesis "A blonde singer is on stage in white." is true?
Options:
- yes
- it is not possible to tell
- no

SOLUTION: Let's solve this gradually. There are many sorts of performer and the blonde performer standing on a stage does not mean that she is a singer.
Answer is it is not possible to tell.

QUESTION: Premise: "Two young girls are jumping on the couch in a jovial manner."
Hypothesis: "Two girls jump on the bed angrily."
Do we know that the hypothesis entailed by the premise?

SOLUTION:
Let's solve this gradually. The girls can't be jumping on the couch and jump on the bed at the same time.
Answer is no.