A little boy laughs as he is tickled.
a little boy is getting tickled by his mom
The fact that a little boy laughs as he is tickled doesn't imply that he is getting tickled by his mom.
exists e1 p1 s1 x1.(exists e2.(Theme(e2,x1) & v_tickle(e2)) & n_male(x1) & as(e1,p1) & Actor(e1,x1) & v_laugh(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 p1 s1 x1 x2.(exists e2.(Actor(e2,x2) & Theme(e2,x1) & v_tickle(e2)) & n_mom(x2) & of(x2,x1) & n_male(x1) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))