A man plays the trumpet on stage
The trumpet is gold.
Not all trumpet are gold
exists e1 x1 x2 x3.(n_trumpet(x2) & on(e1,x3) & n_stage(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))
exists p1 x1.(n_trumpet(x1) & exists x2.((x1 = x2) & n_gold(x2)))