A man is standing in the checkout line at a store.
The man is at home.
The man is either at home or at a store, he can't be both places at once.
exists e1 x1 x2 x3 x4.(n_line(x2) & of(x2,x3) & n_checkout(x3) & at(e1,x4) & n_store(x4) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(at(x1,x2) & n_home(x2)))