premise: A man is posing on a ski board with snow in the background.
hypothesis: A woman is posing on a ski board with lava in the background.
explanation_1: A man posing with snow in the background contradicts a woman posing with lava in the background.
explanation_2: There cannot be both snow and lava in the background.
explanation_3: One can be either a man or a woman.  Snow is cold while lava is hot.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_background(x5) & with(e1,x4) & in(x4,x5) & n_snow(x4) & on(e1,x2) & n_board(x2) & of(x2,x3) & n_ski(x3) & Actor(e1,x1) & v_pose(e1) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5.(n_background(x5) & with(e1,x4) & in(x4,x5) & n_lava(x4) & on(e1,x2) & n_board(x2) & of(x2,x3) & n_ski(x3) & Actor(e1,x1) & v_pose(e1) & n_woman(x1))