A person on a green board is snowboarding in midair.
The board is gree.
green board is same as board is gree
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_midair(x3) & Actor(e1,x1) & v_snowboard(e1) & on(x1,x2) & n_board(x2) & a_green(s1) & Theme(s1,x2) & n_person(x1))
exists p1 x1.(n_board(x1) & exists x2.((x1 = x2) & n_gree(x2)))