premise: The skateboarder is jumping his board in the air while another skateboarder watches.
hypothesis: A skateboarder is jumping while the other is sitting.
explanation_1: A skateboarder watching another skater jump does not imply that he is sitting.
explanation_2: the other skater can be sitting or standing.
explanation_3: The other skateboarder watching may not necessarily be sitting.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_air(x3) & while(e1,x5) & n_watch(x5) & of(x5,x1) & n_skateboarder(x1) & n_skateboarder(x1) & -(x5 = x4) & n_watch(x4) & of(x4,x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_board(x2) & of(x2,x1) & n_male(x1))
hypothesis_logic: exists e1 p1 x1 x2.(n_other(x2) & exists e2.(Actor(e2,x2) & v_sit(e2)) & while(e1,p1) & Actor(e1,x1) & v_jump(e1) & n_skateboarder(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5.(while(e1,x5) & v_jump(e1) & of(x5,x1) & of(x4,x1) & of(x2,x1) & n_watch(x5) & n_watch(x4) & n_skateboarder(x1) & n_male(x1) & n_board(x2) & n_air(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & -(x5 = x4))
hypothesis_sim: exists e1 p1 x1 x2.(while(e1,p1) & v_jump(e1) & n_skateboarder(x1) & n_other(x2) & exists e2.(v_sit(e2) & Actor(e2,x2)) & Actor(e1,x1))