Couple waiting on sidewalk.
A couple is waiting their turn in mars.
there are no sidewalks on mars.
exists e1 x1 x2.(on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_wait(e1) & n_couple(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wait(e1) & in(x2,x3) & n_mar(x3) & n_turn(x2) & of(x2,x1) & n_thing(x1) & n_couple(x1))