Premise: People running down the street with observers

Hypothesis: People are getting their heart rates up.
yes

Premise: A man holding a trophy after a race.

Hypothesis: The man got first place.
it is not possible to tell

Premise: A snowboarder soars off a jump upside down at the mountain resort's terrain park.

Hypothesis: The snowboarder is sleeping.
no

Premise: Teenage boy riding a bicycle through a grassy field.

Hypothesis: A boy rides a skateboard on a sidewalk

no