A brown dog lying in the grass playing with a white rag.
A dog chewing on a rag at a park.
The dog is lying in the grass playing with a white rag but that doesn't necessarily imply that the dog is chewing on it. There are other places besides a park that the dog could be lying in the grass at.
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_playing(x3) & of(x3,x4) & n_grass(x4) & a_topic(x1) & in(e1,x3) & with(x3,x5) & n_rag(x5) & a_white(s2) & Theme(s2,x5) & Actor(e1,x2) & v_lie(e1) & (x1 = x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_park(x4) & on(e1,x3) & n_rag(x3) & Actor(e1,x2) & v_chew(e1) & (x1 = x2) & n_dog(x1))