( ( Describe ( ( the ( ( structure and ) properties ) ) ( of crystals ) ) ) ( , ( ( liquid ( ( crystals and ) amorphous ) ) ( solids . ) ) ) )
(ROOT (S (S (VP (VB Describe) (NP (NP (DT the) (NN structure) (CC and) (NNS properties)) (PP (IN of) (NP (NNS crystals)))))) (, ,) (NP (JJ liquid) (NNS crystals) (CC and) (NNS amorphous)) (VP (VBZ solids)) (. .)))
Describe the structure and properties of crystals, liquid crystals and amorphous solids.
(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))))))) (. .)))