A dog trotting down the beach with a toy in its mouth.
The only animal that is visible is a walrus.
Either there is a dog, or the only animal visible is a walrus.
exists e1 s1 x1 x2 x3 x4 x5.(n_mouth(x5) & of(x5,x3) & n_thing(x3) & n_beach(x3) & a_topic(x1) & with(e1,x4) & in(x4,x5) & n_toy(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_trot(e1) & (x1 = x2) & n_dog(x1))
exists p1 s1 x1 x2.(all x3.(n_animal(x3) -> (x1 = x3)) & n_animal(x1) & exists x4.((x1 = x4) & n_walrus(x4)) & Theme(s1,x2) & a_visible(s1) & (x1 = x2))