premise: A person performs a snowboarding trick on a rail as a man crouches down to get a better view.
hypothesis: The two men are skiing down the slope.
explanation_1: The term person can not refer to two men, but only one. Skiing and snowboarding are not the same activity.
explanation_2: The two men are either skiing down the slope or one performs a snowboarding trick while the other watches.
explanation_3: Skiing down the slope is a mountaineering activity which is different from snowboarding trick on rail.
premise_logic: exists e1 e2 p1 x1 x2 x3.(exists e3 p2 s1 x4.(a_down(s1) & Manner(e3,s1) & Topic(e3,p2) & Actor(e3,x4) & v_crouch(e3) & exists e4 s2 x5.(Theme(e4,x5) & Actor(e4,x4) & v_get(e4) & n_view(x5) & r_more(s2) & a_good(s2) & Theme(s2,x5)) & n_man(x4)) & as(e2,p1) & Theme(e2,x2) & Actor(e2,x1) & v_perform(e2) & on(x2,x3) & n_rail(x3) & n_trick(x2) & Actor(e1,x2) & v_snowboard(e1) & n_person(x1))
hypothesis_logic: exists e1 x1 x2.(n_slope(x2) & n_man(x1) & card_eq_2(x1) & down(e1,x2) & Actor(e1,x1) & v_ski(e1))