( ( These solids ) ( ( are ( called ( crystalline solids ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS solids)) (VP (VBP are) (VP (VBN called) (NP (JJ crystalline) (NNS solids)))) (. .)))
These solids are called crystalline solids.
(ROOT (S (NP (NP (DT The) (NN majority)) (PP (IN of) (NP (NNS solids)))) (VP (VBP are) (VP (VBG crystalline) (PP (IN in) (NP (NN nature))))) (. .)))