A dog in the grass in front of a building.
A dog is at the vet.
The dog is either at the vet or in the grass.
exists x1 x2 x3 x4.(n_grass(x2) & a_topic(x1) & in(x1,x2) & in(x2,x3) & of(x3,x4) & n_building(x4) & n_front(x3) & n_dog(x1))
exists p1 x1 x2.(n_vet(x2) & at(x1,x2) & n_dog(x1))