A young boy is sitting on the grass.
A young boy sits on grass thinking about becoming a king.
We don't know that he is thinking about becoming a king.
exists e1 s1 x1 x2.(n_grass(x2) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 e2 s1 x1 x2 x3 x4.(about(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_become(e2) & n_king(x4) & on(e1,x2) & n_thinking(x2) & of(x2,x3) & n_grass(x3) & Actor(e1,x1) & v_sit(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))