A baby boy swings in a swing, with a big smile on his face.
The baby is happy.
Baby boy is a type of baby, and big smile implies happy.
exists s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x4) & with(x4,x5) & on(x5,x6) & n_face(x6) & of(x6,x1) & n_male(x1) & n_smile(x5) & a_big(s1) & Theme(s1,x5) & n_swing(x4) & n_swing(x1) & of(x1,x3) & n_boy(x3) & of(x1,x2) & n_baby(x2))
exists s1 x1.(n_baby(x1) & Theme(s1,x1) & a_happy(s1))