A man on a cellphone stands in front of a restaurant.
man with cellphone
The fact that a man on a cellphone stands in front of a restaurant does not imply that man with cellphone.
exists e1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_restaurant(x4) & n_front(x3) & Actor(e1,x1) & v_stand(e1) & on(x1,x2) & n_cellphone(x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_cellphone(x2) & n_man(x1))