The white and brown dog runs across the grass.
A dog is playing catch with his owner.
Dog running across the grass does not always imply playing catch with his owner
exists e1 s1 s2 x1 x2.(n_grass(x2) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_white(s1) & Theme(s1,x1) & across(e1,x2) & Actor(e1,x1) & v_run(e1))
exists e1 x1 x2 x3.(with(e1,x3) & n_owner(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_catch(x2) & n_dog(x1))