Premise: A brown dog is chasing a red Frisbee across a grassy field.

Hypothesis: dog chases frisbee
yes

Premise: A smiling man with his arm around a smiling woman.

Hypothesis: A man and woman are smiling at a dog.
it is not possible to tell

Premise: A boy and girl are dancing.

Hypothesis: A boy and girl go out for ice cream.
no

Premise: A blond woman with a red backpack in the snow.

Hypothesis: A woman is outdoors on a cold day.
yes