Premise: A man in a yellow shirt is sitting on a motorcycle.

Hypothesis: The man is wearing a motorcycle helmet.
it is not possible to tell

Premise: Two men with excited looks on their faces leap inside of a fenced in area.

Hypothesis: Three calm men are sitting on the floor.
no

Premise: A dog runs in a field.

Hypothesis: A dog chases after a boy in the field
it is not possible to tell

Premise: A young man with a v-neck considers a water jug while standing next to a black motorcycle.

Hypothesis: A guy is next to a two-wheeled vehicle.
yes