A man sitting on a ball hides his face from a small kid.
A father is sitting on a large ball and playing peek-a-boo with his son.
A man can be a father or not, 'hides his face' could be shame instead of peek-a-boo, and the kid could not be his son or anybody's son if it's female.
exists e1 e2 s1 x1 x2 x3 x4 x5.(from(e2,x5) & n_kid(x5) & a_small(s1) & Theme(s1,x5) & Theme(e2,x4) & Actor(e2,x1) & v_hide(e2) & n_face(x4) & of(x4,x1) & n_male(x1) & on(e1,x3) & n_ball(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3 x4 x5 x6.(with(e1,x6) & n_son(x6) & of(x6,x1) & n_male(x1) & on(e1,x2) & n_peek-a-boo(x4) & of(x4,x5) & n_playing(x5) & n_ball(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_father(x1))