A man in work clothes is holding a chain.
A man is holding a chain necklace.
The man is holding a chain. It does not say the chain is a necklace. It could be a tow chain, a bracelet, a dog chain or any other type of chain.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_hold(e1) & n_chain(x4) & in(x1,x2) & n_clothes(x2) & of(x2,x3) & n_work(x3) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_necklace(x2) & of(x2,x3) & n_chain(x3) & n_man(x1))