Some children are standing in a doorway.
A door is nearby.
Just because the children are in a doorway does not mean the door is nearby.
exists e1 x1 x2.(in(e1,x2) & n_doorway(x2) & Actor(e1,x1) & v_stand(e1) & n_child(x1))
exists s1 x1.(Theme(s1,x1) & a_nearby(s1) & n_door(x1))