An old man is standing outside a building.
A man waits outside for a friend.
man  doesn't always mean friend.
exists e1 s1 x1 x2.(outside(e1,x2) & n_building(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists x1 x2 x3 x4.(a_topic(x1) & for(x3,x4) & n_friend(x4) & outside(x1,x3) & n_thing(x3) & n_wait(x1) & of(x1,x2) & n_man(x2))