Premise: A man performs a trick on a yellow bike in a skate park covered in graffiti.

Hypothesis: a man does a 360 on a bike at park
it is not possible to tell

Premise: A man wearing a green shirt and an orange safety hat works on mechanical equipment inside a fenced area, while a group of people walk on a lawn behind him.

Hypothesis: A construction worker performs his duties.
it is not possible to tell

Premise: People testing the gaming console called the "Wii".

Hypothesis: Some humans testing
yes

Premise: A young, blond girl in a fairy outfit is riding a pink and purple tricycle.

Hypothesis: A girl is on a tricycle.
yes