A child is looking at an exhibit.
A child is at the Smithsonian.
Not all exhibits are the Smithsonian.
exists e1 x1 x2.(at(e1,x2) & n_exhibit(x2) & Actor(e1,x1) & v_look(e1) & n_child(x1))
exists p1 x1 x2.(ne_geo_smithsonian(x2) & at(x1,x2) & n_child(x1))