Question:
Premise: A child in white briefs is pictured jumping in midair above the water of a rive, with trees in the background.

Hypothesis: A child is in black briefs.
Is the hypothesis true?

Answer:
no

Question:
Premise: A man with a shaved head and a button-up shirt looks into a microscope near a poster about red blood cells.

Hypothesis: A scientist studies a vaccine.
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: a skateboarder grinds a rail.

Hypothesis: A skateboarder is wearing a helmet.
Is the hypothesis true?

Answer:
it is not possible to tell