( ( detecting ( new ( metal-ore deposits ) ) ) ; )
(ROOT (S (VP (VBG detecting) (NP (JJ new) (JJ metal-ore) (NNS deposits))) (: ;)))
detecting new metal-ore deposits;
(ROOT (S (NP (NNS Metals)) (VP (VBP start) (PRT (RP out)) (PP (IN as) (NP (NN ore)))) (. .)))
Metals start out as ore.