A group of friends play instruments in the middle of the woods.
The people are inside sleeping.
If this the same group of people, they are either playing instruments or sleeping inside, but not both.
exists e1 x1 x2 x3 x4 x5.(n_wood(x5) & n_middle(x4) & in(e1,x4) & of(x4,x5) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_instrument(x3) & of(x1,x2) & n_friend(x2) & n_group(x1))
exists p1 x1.(n_people(x1) & exists s1 x2.((x1 = x2) & n_sleeping(x2) & a_inside(s1) & Theme(s1,x2)))