( Brass ( ( is ( ( an alloy ) ( made ( from ( ( copper and ) zinc ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Brass)) (VP (VBZ is) (NP (NP (DT an) (NN alloy)) (VP (VBN made) (PP (IN from) (NP (NN copper) (CC and) (NN zinc)))))) (. .)))
Brass is an alloy made from copper and zinc.
(ROOT (S (NP (NNP Brass) (NNP alloy)) (VP (VBZ is) (VP (VBN made) (PP (IN from) (NP (NN copper) (CC and) (NN zinc))))) (. .)))