A skilled gold worker works on his next piece of art.
a man shows his gold work
A skilled gold worker is a man and piece of art is another way of describing his gold work.
exists e1 s1 s2 x1 x2 x3 x4.(on(e1,x3) & of(x3,x4) & n_art(x4) & n_piece(x3) & a_next(s2) & Theme(s2,x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_work(e1) & n_worker(x1) & of(x1,x2) & n_gold(x2) & a_skilled(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_show(e1) & n_work(x2) & of(x2,x3) & n_gold(x3) & of(x2,x1) & n_male(x1) & n_man(x1))