premise: A snowboarder in green pants boards down a snowy mountain.
hypothesis: A snowboard rides down the mountain.
explanation_1: One must use a snowboard in order to be called a snowboarder.
explanation_2: A snowboard needs a snowboarder to ride down a mountain, and it needs to be snowy for that to happen.
explanation_3: BOARDS DOWN MEANS RIDES DOWN THE SNOWY MOUNTAIN
premise_logic: exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & down(x1,x4) & n_mountain(x4) & a_snowy(s2) & Theme(s2,x4) & in(x1,x2) & n_board(x2) & of(x2,x3) & n_pants(x3) & a_green(s1) & Theme(s1,x2) & n_snowboarder(x1))
hypothesis_logic: exists e1 x1 x2.(n_mountain(x2) & down(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_snowboard(x1))