( ( ( Ore Minerals ) ( ( ( Most metals ) ( we use ) ) ( are ( extracted ( from ( ores ( -LRB- ( ( ( raw ( unrefined rock ) ) ( containing ( an ( ( economically valuable ) metal ) ) ) ) -RRB- ) ) ) ) ) ) ) ) ( Metals ( ( are ( found ( in ( ( ( ( only trace ) quantities ) ( in ( normal ( ( rocks and ) minerals ) ) ) ) ( -LRB- ( ( ( see list ) below ) -RRB- ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (NNP Ore) (NNPS Minerals)) (SBAR (S (NP (NP (JJS Most) (NNS metals)) (SBAR (S (NP (PRP we)) (VP (VBP use))))) (VP (VBP are) (VP (VBN extracted) (PP (IN from) (NP (NP (NNS ores)) (PRN (-LRB- -LRB-) (NP (NP (JJ raw) (JJ unrefined) (NN rock)) (S (VP (VBG containing) (NP (DT an) (ADJP (RB economically) (JJ valuable)) (NN metal))))) (-RRB- -RRB-))))))))) (ADVP (RB Metals)) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (NP (QP (RB only) (CD trace)) (NNS quantities)) (PP (IN in) (NP (JJ normal) (NNS rocks) (CC and) (NNS minerals))) (PRN (-LRB- -LRB-) (S (VP (VB see) (NP (NN list)) (ADVP (RB below)))) (-RRB- -RRB-)))))) (. .)))
Ore Minerals Most metals we use are extracted from ores (raw unrefined rock containing an economically valuable metal) Metals are found in only trace quantities in normal rocks and minerals (see list below).
(ROOT (S (NP (JJ Ores) (NN rock)) (VP (VBZ contains) (NP (NP (NNS concentrations)) (PP (IN of) (NP (JJ valuable) (NNS minerals))))) (. .)))