A teenager sitting very, very high in a tree.
An elf is eating cookies in the laundry room.
There can be either a teenager or an elf. He can be either eating cookies or sitting. One cannot be in a tree and in a laundry room at the same time.
exists e1 p1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_tree(x3) & exists s1 s2.(r_very(s2) & Theme(s2,x2) & a_high(s2) & Theme(s1,x2) & a_very(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_teenager(x1))
exists e1 x1 x2 x3 x4.(n_room(x3) & of(x3,x4) & n_laundry(x4) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_cookie(x2) & n_elf(x1))