Snow is being kicked up by the board.
There are people snowboarding
People snowboarding is a restatement of snow being kicked up by the board.
exists e1 s1 x1 x2.(n_board(x2) & ne_nam_snow(x1) & Actor(e1,x2) & a_up(s1) & Manner(e1,s1) & Theme(e1,x1) & v_kick(e1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_snowboard(e1) & (x2 = x3) & n_people(x2))