A woman on a cellphone stands in an occupied room.
A woman on a Nokia stands in a room occupied by dogs.
You can not infer she is on a Nokia.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_room(x3) & a_occupied(s1) & Theme(s1,x3) & Actor(e1,x1) & v_stand(e1) & on(x1,x2) & n_cellphone(x2) & n_woman(x1))
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x4) & Actor(e1,x6) & n_dog(x6) & Theme(e1,x5) & v_occupy(e1) & (x4 = x5) & n_room(x4) & on(x1,x2) & n_stand(x2) & (x2 = x3) & ne_geo_nokia(x3) & n_woman(x1))