A toddler plays on a playground.
The toddler is on the couch watching t.v.
One can not be on the couch and plays on a playground at the same time.
exists e1 x1 x2.(on(e1,x2) & n_playground(x2) & Actor(e1,x1) & v_play(e1) & n_toddler(x1))
exists p1 x1 x2.(n_couch(x2) & n_toddler(x1) & exists e1 x3 x4.(on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_watch(e1) & n_t.v(x4) & (x2 = x3)))