A person is walking in a city with a group of birds.
A person is walking in a small town with a group of cats.
The person cannot be walking in both a city and a small town.
exists e1 x1 x2 x3 x4.(with(e1,x3) & of(x3,x4) & n_bird(x4) & n_group(x3) & in(e1,x2) & n_city(x2) & Actor(e1,x1) & v_walk(e1) & n_person(x1))
exists e1 s1 x1 x2 x3 x4.(in(e1,x2) & with(x2,x3) & of(x3,x4) & n_cat(x4) & n_group(x3) & n_town(x2) & a_small(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_person(x1))