A young boy watching a woman walk though blocks.
the young boy is watching his mother
Although he is watching a woman, it does not imply the woman is his mother.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & though(x3,x5) & n_block(x5) & n_walk(x3) & of(x3,x4) & n_woman(x4) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_mother(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1))