People stand inside a rock dome.
People are at a natural landmark.
Not all rock domes are natural or landmarks.
exists e1 x1 x2 x3.(inside(e1,x2) & n_dome(x2) & of(x2,x3) & n_rock(x3) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists p1 x1.(exists s1 x2.(at(x1,x2) & n_landmark(x2) & a_natural(s1) & Theme(s1,x2)) & n_people(x1))