Premise: Two greyhounds race

Hypothesis: The two dogs are eating their food.
no

Premise: A woman with blond-hair and a cowboy hat, is holding the American Flag while riding a brown horse in an arena.

Hypothesis: A cowgirl is riding a horse as an opening act at a rodeo performance.
it is not possible to tell

Premise: Two young boys wearing shorts play outside while a police officer watches.

Hypothesis: The kids eat ice cream while the police officers watch.
no

Premise: Snowboarder in midair performing a stunt on mountaintop.

Hypothesis: A skateboarder performs a trick.
no