A tan and white dog retrieving a ball on a gravel path.
A large dog chases a ball in the back yard of the house.
This tan and white dog is not necessarily big and the ball in on the gravel path is not necessarily in the back yard of the house.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_path(x4) & of(x4,x5) & n_gravel(x5) & Theme(e1,x3) & Actor(e1,x2) & v_retrieve(e1) & n_ball(x3) & (x1 = x2) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_tan(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_house(x4) & n_yard(x3) & a_back(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & in(x2,x3) & of(x3,x4) & n_ball(x2) & n_dog(x1) & a_large(s1) & Theme(s1,x1))