premise: The boy is skateboarding on the stairs.
hypothesis: The boy is sitting on the stairs.
explanation_1: Sitting on the stairs is not the same as skateboarding on the stairs.
premise_logic: exists e1 x1 x2.(n_stair(x2) & n_boy(x1) & on(e1,x2) & Actor(e1,x1) & v_skateboard(e1))
hypothesis_logic: exists e1 x1 x2.(n_stair(x2) & n_boy(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))
premise_sim: exists e1 x1 x2.(v_skateboard(e1) & on(e1,x2) & n_stair(x2) & n_boy(x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_sit(e1) & on(e1,x2) & n_stair(x2) & n_boy(x1) & Actor(e1,x1))