Q: Premise: "A skateboarder wearing a gray helmet is riding his board along a concrete curve."
Hypothesis: "A skateboarder is riding his board."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: The skateboarder riding his board along a concrete curve is wearing a gray helmet.
The answer is yes.

QUESTION: Premise: "Old hands are working on a task."
Hypothesis: "There are people watching others work on a task."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: You can't watch others work on a task and work on a task at the same time.
The answer is no.

[QUESTION] Premise: "A man and girl sit on a bench while eating ice cream cones."
Hypothesis: "The couple sit together."
Do we know that the hypothesis entailed by the premise?
A MAN AND A GIRL IS TWO AND A COUPLE IS TWO.
The answer is yes.

Q: Test for natural language inference.
Premise: "Lady wearing spectacles points camera with some trepidation."
Hypothesis: "A lady is holding a camera."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The lady points a camera so she must be holding a camera.
The answer is yes.

QUESTION: Given the sentence "A girl in a pink suit chases a gull on a beach." can we conclude that "There is a bird on the beach."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A gull is a bird and the sentence states that said bird is on a beach.
The answer is yes.

QUESTION: Can we conclude from "A man doing a back flip off a box." that "The man is flipping off the box and onto the tramopline."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
Just because A man doing a back flip off a box does not imply that he is is flipping off the box and onto the tramopline.
The answer is it is not possible to tell.