A brown dog carrying a stick in its mouth.
A dog is playing.
dog carrying a stick in its mouth  doesn't always mean  playing.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_carry(e1) & in(x3,x4) & n_mouth(x4) & of(x4,x1) & n_thing(x1) & n_stick(x3) & (x1 = x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_dog(x1))