A man in a purple jacket has an expression on his face.
The man smiling.
An expression on a man's face is not always an expression of smiling.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_have(e1) & on(x4,x5) & n_face(x5) & of(x5,x1) & n_male(x1) & n_expression(x4) & in(x1,x2) & n_jacket(x2) & of(x2,x3) & n_purple(x3) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & a_topic(x1) & Actor(e1,x2) & v_smile(e1) & (x1 = x2))