( MINERALS ( ( ( ( A mineral ) ( is ( any naturally-occurring ) ) ) , ) ( ( homogeneous ( solid ( that ( has ( ( ( a ( definite ( chemical composition ) ) ) and ) ( a ( distinctive ( internal ( crystal structure ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNS MINERALS)) (PRN (S (NP (DT A) (NN mineral)) (VP (VBZ is) (NP (DT any) (NN naturally-occurring)))) (, ,)) (VP (VBZ homogeneous) (ADJP (JJ solid) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (NP (NP (DT a) (JJ definite) (NN chemical) (NN composition)) (CC and) (NP (DT a) (JJ distinctive) (JJ internal) (NN crystal) (NN structure)))))))) (. .)))
MINERALS A mineral is any naturally-occurring, homogeneous solid that has a definite chemical composition and a distinctive internal crystal structure.
(ROOT (S (NP (DT A) (NN mineral)) (VP (VBZ is) (VP (VBN described) (PP (IN as) (NP (NP (DT a) (JJ solid) (JJ natural) (NN material)) (PP (IN with) (NP (DT a) (NN crystal) (NN structure))))))) (. .)))