The woman is wearing a necklace but has no other visible jewelry.
The necklace is gold
It cannot be inferred that the necklace is made of gold.
exists e1 s2 x1 x2 x4.(n_jewelry(x4) & a_visible(s2) & Theme(s2,x4) & n_woman(x1) & -exists e2 s1 x3.(Theme(e2,x3) & Actor(e2,x1) & v_have(e2) & -(x3 = x4) & n_jewelry(x3) & a_visible(s1) & Theme(s1,x3)) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_necklace(x2))
exists p1 x1.(n_necklace(x1) & exists x2.((x1 = x2) & n_gold(x2)))