Man using a vacuum on his lawn.
The vacuum got rid of some grass.
The vacuum did not necessarily get rid of some grass, even though it was used on a lawn.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_lawn(x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x2) & v_use(e1) & n_vacuum(x3) & (x1 = x2) & n_man(x1))
exists e1 p1 x1.(n_vacuum(x1) & exists s1 x2.(of(s1,x2) & n_grass(x2) & Theme(s1,x1) & a_rid(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1))