Question:
Premise: man in float in the water.

Hypothesis: A man is swimming in the water.
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: Two men and a woman are talking to each other in a backyard.

Hypothesis: Two men and a woman are building a fort in the backyard.
Is the hypothesis true?

Answer:
no

Question:
Premise: A bird is standing on a rock next to her six babies.

Hypothesis: There are baby birds by the rock.
Is the hypothesis true?

Answer:
yes