Premise: A person wearing full biker gear is riding a BMX bike over hilly terrain.

Hypothesis: The person is riding a motorcycle.
no

Premise: New York city is a highly crowded place, where people do various activities from walking to sitting on stairs using a laptop to just watching the city crowd.

Hypothesis: People using laptop to take pictures of the crowd of people walking and sitting around them in public.
it is not possible to tell

Premise: A lady holding a green sign at a protest to support Children advocacy.

Hypothesis: This woman is against Children advocacy.
no

Premise: A man in a blue hat and an apron carving wooden figurines.

Hypothesis: A man is wearing a hat
yes