Premise: An African American man, wearing a sweatshirt and coat, walking in a city.

Hypothesis: A man is walking through New York.
it is not possible to tell

Premise: A man pushes a miniature train engine which a little boy, possibly his son, is riding down a track at a park of some sort.

Hypothesis: Someone is pushing a train on some tracks.
yes

Premise: Girl in black pants& gray tank is looking kind of worried.

Hypothesis: A boy is doing flips.
no

Premise: A teenager boy does a trick with his skateboard against a wall.

Hypothesis: A teen boy on a bike.
no