A snowboarder kicking up snow under a tree on a mountain.
A person who rides a snowboard is by snow and a plant and a mountain.
A snowboarder is a person who rides a snow board.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & under(e1,x4) & on(x4,x5) & n_mountain(x5) & n_tree(x4) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_kick(e1) & n_snow(x3) & (x1 = x2) & n_snowboarder(x1))
exists e1 p1 x1 x2 x3.(exists x4 x5 x6 x7 x8.(by(x1,x4) & subset_of(x6,x4) & subset_of(x8,x6) & n_mountain(x8) & subset_of(x7,x6) & n_plant(x7) & subset_of(x5,x4) & n_snow(x5)) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_snowboard(x3) & (x1 = x2) & n_person(x1))