People are sitting at tables and some are looking at a dog balloon.
People are walking their dogs.
People who are walking are not sitting.
exists e2 e1 x1 x2 x3 x4 x5.(at(e2,x4) & n_balloon(x4) & of(x4,x5) & n_dog(x5) & Actor(e2,x3) & v_look(e2) & n_thing(x3) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x2) & of(x2,x1) & n_thing(x1) & n_people(x1))