Premise: A man is about to saw off a small tree limb while a child in a fireman's hat watches.

Hypothesis: The man is trying to teach the child about fire safety.
it is not possible to tell

Premise: Young woman in a bikini top on the beach.

Hypothesis: A young women is wearing a one piece at the pool.
no

Premise: Eight drag racers are racing around a curvy course with helmets on and there is a line of trees at the edge of the course.

Hypothesis: The racers hate each other.
it is not possible to tell

Premise: Two men run a race next to each other; one is listening to music.

Hypothesis: Two men are running a race to see who is going to win the million dollar prize.
it is not possible to tell