A woman and little boy sits on a police motorcycle.
The woman and little boy are related.
just because a woman and little boy sits on a police motorcycle doesn't imply they are related
exists e1 s1 x1 x2 x3 x4 x5.(on(e1,x4) & n_motorcycle(x4) & of(x4,x5) & n_police(x5) & Actor(e1,x1) & v_sit(e1) & n_boy(x3) & a_little(s1) & Theme(s1,x3) & n_woman(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 s1 x1 x2 x3.(n_boy(x3) & a_little(s1) & Theme(s1,x3) & n_woman(x2) & subset_of(x3,x1) & subset_of(x2,x1) & Theme(e1,x1) & v_relate(e1))