A dog runs through the grass.
A dog taking a nap outside.
A dog cannot run and take a nap at the same time.
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_outside(x3) & of(x3,x4) & n_nap(x4) & (x1 = x2) & n_dog(x1))