Premise: A woman in heels holding the arm of a man walking up steps in the snow.

Hypothesis: A woman in heels holds another man on the arm.
yes

Premise: A smiling youth in a blue shirt is posing on some outdoor stairs.

Hypothesis: Nobody is smiling.
no

Premise: A policeman wearing a black had and a bright, green shirt licks his lips.

Hypothesis: A police officer dressed in a bright shirt and a black hat wets his lips
yes

Premise: Several people on a boat, some looking out at the water while some are sleeping.

Hypothesis: Some people are going swimming.
no