premise: A person is riding his bicycle and is flying through the air on it.
hypothesis: The boy is doing tricks with his bike.
explanation_1: The person on the bike doesn't have to be a boy. Nor does them flying through the air have to be doing tricks or flying intentionally.
explanation_2: Just because a person is riding his bicycle and is flying through the air on it does not mean he is doing tricks with his bike.
explanation_3: The person who is a male is not necessarily doing  tricks on his bicycle nor is it clearly stated that he is a boy (male child).
premise_logic: exists e1 e2 x1 x2 x3 x4.(n_air(x4) & on(e2,x1) & n_thing(x1) & through(e2,x4) & Actor(e2,x3) & v_fly(e2) & n_person(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x2) & of(x2,x1) & n_male(x1) & n_person(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_bike(x3) & of(x3,x1) & n_male(x1) & n_boy(x1) & with(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2))