A woman and a child are at a crowded airport.
A woman and her son are waiting for their flight.
In fact that a woman and a child are at a crowded airport does not imply the child is her son.
exists p1 x1 x2 x3.(exists s1 x4.(at(x1,x4) & n_airport(x4) & a_crowded(s1) & Theme(s1,x4)) & subset_of(x3,x1) & n_child(x3) & subset_of(x2,x1) & n_woman(x2))
exists e1 x1 x2 x3 x4.(for(e1,x4) & n_flight(x4) & of(x4,x2) & n_thing(x2) & Actor(e1,x1) & v_wait(e1) & subset_of(x3,x1) & n_son(x3) & of(x3,x2) & n_female(x2) & subset_of(x2,x1) & n_woman(x2))