( Synthetic ( Mineral ( Fibres - ) ) )
(ROOT (NP (NNP Synthetic) (NNP Mineral) (NNP Fibres) (: -)))
Synthetic Mineral Fibres -
(ROOT (S (NP (DT A) (JJ synthetic) (NN diamond)) (VP (VBZ is) (RB not) (VP (VBN considered) (NP (DT a) (NN mineral)) (SBAR (IN because) (S (NP (NNS minerals)) (VP (MD must) (VP (VB be) (VP (VBN created) (ADVP (RB naturally))))))))) (. .)))