People sitting outside in a park on a rock.
The people are inside a restaurant.
The same people cannot be present inside als well as outside.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_rock(x4) & in(e1,x3) & n_park(x3) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(n_people(x1) & exists x2.(inside(x1,x2) & n_restaurant(x2)))