A boy holds a picture over his head.
holding picture over a boy's head
holds a picture shows that one is holding a  picture.
exists e1 x1 x2 x3.(over(e1,x3) & n_head(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_picture(x2) & n_boy(x1))
exists e1 x1 x2 x3.(a_topic(x1) & over(x1,x3) & n_head(x3) & of(x3,x2) & n_boy(x2) & n_picture(x1) & Actor(e1,x1) & v_hold(e1))