A boy on a chained swing looks to the right and smiles.
His mother is taking his picture.
The boy may be alone and not with his mother.  Boys smile for reasons other than someone taking his picture.
exists e1 s1 x1 x2 x3 x4 x5.(n_smile(x5) & n_right(x4) & subset_of(x5,x3) & subset_of(x4,x3) & to(e1,x3) & Actor(e1,x1) & v_look(e1) & on(x1,x2) & n_swing(x2) & a_chained(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 x1 x2 x3.(n_picture(x3) & of(x3,x1) & n_male(x1) & n_male(x1) & n_mother(x2) & of(x2,x1) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1))