a skeleton sits on the bushes.
It is halloween time and the skeleton is outside.
bushes doesn't always mean  halloween time
exists e1 x1 x2.(n_bush(x2) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_skeleton(x1))
exists p1 s1 x1 x2.(n_skeleton(x2) & n_thing(x1) & Theme(s1,x2) & a_outside(s1) & exists s2 x3.((x1 = x3) & n_time(x3) & a_halloween(s2) & Theme(s2,x3)))