premise: A boy on a skateboard is at the top of a ramp.
hypothesis: The boy is smiling
explanation_1: The boy on the skateboard may not be smiling at all.
premise_logic: exists p1 x1 x2 x3.(n_top(x3) & exists x4.(at(x1,x3) & of(x3,x4) & n_ramp(x4)) & on(x1,x2) & n_skateboard(x2) & n_boy(x1))
hypothesis_logic: exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_smile(e1))
premise_sim: exists x1 x2 x3.(on(x1,x2) & n_top(x3) & n_skateboard(x2) & n_boy(x1) & exists x4.(of(x3,x4) & n_ramp(x4) & at(x1,x3)))
hypothesis_sim: exists e1 x1.(v_smile(e1) & n_boy(x1) & Actor(e1,x1))