( ( ( ( metals and ) ores ) ( 5.2 % ) ) ; )
(ROOT (NP (NP (NP (NNS metals) (CC and) (NNS ores)) (NP (CD 5.2) (NN %))) (: ;)))
metals and ores 5.2%;
(ROOT (S (NP (NNS Metals)) (VP (VBP start) (PRT (RP out)) (PP (IN as) (NP (NN ore)))) (. .)))
Metals start out as ore.