An elderly woman wearing glasses is laughing with a middle-aged man.
The man is the son of the woman
Just because elderly women is laughing with a middle-aged man doesn't mean that he is her son
exists e1 e2 s1 s2 x1 x2 x3 x4.(with(e2,x4) & n_man(x4) & a_middle-aged(s2) & Theme(s2,x4) & Actor(e2,x1) & v_laugh(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2) & n_woman(x1) & a_elderly(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(n_woman(x3) & n_son(x2) & n_man(x1) & (x1 = x2) & of(x2,x3))