Question:
Premise: A skateboarder on a ramp.

Hypothesis: There is a skateboarder.
Is the hypothesis true?

Answer:
yes

Question:
Premise: A man is kayaking in rough water.

Hypothesis: A man is kayaking on rapids in a river.
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: The girl is wearing a white shirt with pink skirt, and she is standing in front of a house.

Hypothesis: Dinosaurs are walking across the background.
Is the hypothesis true?

Answer:
no