A little brown dog runs through the grass.
a dog running in a ground
A dog running through grass is not assumed to be running in a ground.
exists e1 s1 s2 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_ground(x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1))