A group of people at a rodeo.
There are no animals.
people   is not the same as animals
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & at(x2,x3) & n_rodeo(x3) & n_people(x2) & n_group(x1))
exists p1 x1.-exists x2.((x1 = x2) & n_animal(x2))