Woman with child laughs by the shoreline.
Woman with child laughs at someone falling down near the shoreline.
Laughing doesn't imply that it is at someone falling.
exists s1 x1 x2 x3.(n_shoreline(x3) & ne_nam_woman(s1) & a_topic(s1) & with(s1,x1) & by(x1,x3) & n_laugh(x1) & of(x1,x2) & n_child(x2))
exists e1 p1 s1 x1 x2 x3 x4 x5.(n_shoreline(x5) & ne_nam_woman(s1) & a_topic(s1) & with(s1,x1) & at(x1,x3) & near(e1,x5) & exists s2.(Theme(s2,x4) & a_down(s2)) & Topic(e1,p1) & Actor(e1,x4) & v_fall(e1) & (x3 = x4) & n_person(x3) & n_laugh(x1) & of(x1,x2) & n_child(x2))