A man and a woman are walking across the street.
An old couple hold hands to cross the road.
Not all men and women hold hands, and not all men and women are old or a couple.
exists e1 x1 x2 x3 x4.(n_street(x4) & across(e1,x4) & Actor(e1,x1) & v_walk(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 p1 s1 s2 x1 x2 x3 x4.(n_road(x4) & Topic(e1,p1) & exists e2.(Theme(e2,x4) & Actor(e2,x1) & v_cross(e2)) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_hand(x3) & n_couple(x2) & a_old(s2) & Theme(s2,x2) & n_couple(x1) & a_old(s1) & Theme(s1,x1))