premise: A person is flying through the air on a snowboard as the wind picks up some snow. hypothesis: A man is flying through the air on a snowboard as the wind picks up some snow.
entailment: A man is a person. Hence, 'A person is flying through the air on a snowboard as the wind picks up some snow'  means the same as 'A person is flying through the air on a snowboard as the wind picks up some snow'.