The cup is shiny.
The coffee cup is shiny
The fact that a cup is shiny does not imply that that cup is also a coffee cup.
exists s1 x1.(n_cup(x1) & Theme(s1,x1) & a_shiny(s1))
exists s1 x1 x2.(n_cup(x1) & of(x1,x2) & n_coffee(x2) & Theme(s1,x1) & a_shiny(s1))