a tan and white dog swimming towards a waterfall
The dog is wearing a yellow collar.
Not every dog wears a yellow collar.
exists s1 s2 x1 x2 x3.(a_topic(x1) & towards(x1,x3) & n_waterfall(x3) & n_swimming(x1) & of(x1,x2) & n_dog(x2) & a_white(s2) & Theme(s2,x1) & a_tan(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_collar(x2) & a_yellow(s1) & Theme(s1,x2))