Premise: A youngster playing in the park.

Hypothesis: The kid is playing with friends.
it is not possible to tell

Premise: A light brown colored dog is playing ball with a redish brown colored dog in a fenced in area.

Hypothesis: a dog chases a ball in a fences in area
it is not possible to tell

Premise: A man holding a sign on stage to a crowd of people while another plays guitar.

Hypothesis: There is no sign on the stage.
no

Premise: Several men in various positions and states of distress surround a kicking bull.

Hypothesis: Cowboys try to subdue a bull after it gored a rodeo clown.
it is not possible to tell