A man stands in the street.
a man in the street stopping traffic
A street could be empty. Standing in the street doesn't necessarily imply he is stopping traffic.
exists e1 x1 x2.(n_street(x2) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists x1 x2 x3 x4.(n_traffic(x2) & of(x2,x4) & n_stopping(x4) & of(x2,x3) & n_street(x3) & a_topic(x1) & in(x1,x2) & n_man(x1))