( ( of ( ( the nature ) ( of ( a mineral ) ) ) ) ( ; ( ( pertaining ( to ( ( ( a mineral ) or ) minerals ) ) ) . ) ) )
(ROOT (FRAG (PP (IN of) (NP (NP (DT the) (NN nature)) (PP (IN of) (NP (DT a) (NN mineral))))) (: ;) (S (VP (VBG pertaining) (PP (TO to) (NP (NP (DT a) (NN mineral)) (CC or) (NP (NNS minerals)))))) (. .)))
of the nature of a mineral; pertaining to a mineral or minerals.
(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))))))))) (. .)))