Some children are standing in a doorway.
Children are present.
If you could not see the children standing in the doorway they would not be present.
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_present(s1) & n_child(x1))