Premise: A man is demonstrating how to work with clay while at least two people observe.

Hypothesis: A person is teaching a class
it is not possible to tell

Premise: A hiker is climbing over rocks to get closer to a waterfall in a rural area.

Hypothesis: The hiker is inside using the fake rock wall for practice.
no

Premise: A young black girl is being sketched by an artist while sitting outside.

Hypothesis: The girl is smiling.
it is not possible to tell

Premise: A man wearing jeans and a brown shirt is putting duck tape around his car's headlight.

Hypothesis: A woman duck tapes her boobs so they stay in her dress.
no