A waterskiing man on something similar to a snowboard perches on a rail obstacle with just the tip of the board.
A waterskiing man is on a rail obstacle.
Perching on a rail obstacle insinuates that the man is on the rail obstacle.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_board(x8) & n_tip(x7) & on(e2,x5) & with(x5,x7) & of(x7,x8) & r_just(x7) & n_obstacle(x5) & of(x5,x6) & n_rail(x6) & Actor(e2,x1) & v_perch(e2) & on(x1,x2) & to(s1,x4) & n_snowboard(x4) & Theme(s1,x3) & a_similar(s1) & (x2 = x3) & n_thing(x2) & n_man(x1) & Actor(e1,x1) & v_waterskie(e1))
exists p1 x1 x2.(exists x3 x4.(on(x1,x3) & n_obstacle(x3) & of(x3,x4) & n_rail(x4)) & n_man(x1) & of(x1,x2) & n_waterskiing(x2))