A dog walking on mud flats.
There is pet outdoors
Dog is a pet and mud would be outdoors
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_flat(x3) & of(x3,x4) & n_mud(x4) & n_walking(x1) & of(x1,x2) & n_dog(x2))
exists p1 x1 s1 x2.((x1 = x2) & n_outdoors(x2) & a_pet(s1) & Theme(s1,x2))