An old man stands in front of a doorway.
A person in a doorway.
If your infront of a doorway you can say they are in a doorway
exists e1 s1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_doorway(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_doorway(x2) & n_person(x1))