A snowboarder flips upside down with a snow covered hill in the background.
Skiers are sitting around a campfire in the dark.
Skiers sitting around a campfire could not also be a snowboarder that flips upside down.
exists e1 e2 s1 x1 x2 x3 x4.(n_background(x4) & r_upside(e1) & a_down(s1) & Manner(e1,s1) & with(e1,x2) & in(x2,x4) & n_hill(x2) & Theme(e2,x2) & v_cover(e2) & of(x2,x3) & n_snow(x3) & Actor(e1,x1) & v_flip(e1) & n_snowboarder(x1))
exists e1 x1 x2 x3.(n_dark(x3) & in(e1,x3) & around(e1,x2) & n_campfire(x2) & Actor(e1,x1) & v_sit(e1) & n_skier(x1))