A black dog jumps into the water off a dock.
The brown dog swims.
A dog can be either black or brown.
exists s1 x1 x2 x3 x4.(n_water(x3) & a_topic(x1) & into(x1,x3) & off(x3,x4) & n_dock(x4) & n_jump(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists s1 x1 x2.(n_swim(x1) & of(x1,x2) & n_dog(x2) & a_brown(s1) & Theme(s1,x1) & a_topic(x1))