Brown dog chasing black dog through snow.
A dog is chasing a burglar through the snow.
The dog is either chasing another dog or a burglar.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & through(x1,x4) & n_snow(x4) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & of(x1,x3) & n_chasing(x3) & of(x1,x2) & n_dog(x2) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_snow(x3) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_burglar(x2) & n_dog(x1))