( ( Within ( this ( empty ( pyramidal shape ) ) ) ) ( , ( ( ( ( ( angles , ) dimensions ) and ) volume ) ( ( can ( be derived ) ) . ) ) ) )
(ROOT (S (PP (IN Within) (NP (DT this) (JJ empty) (JJ pyramidal) (NN shape))) (, ,) (NP (NP (NNS angles)) (, ,) (NP (NNS dimensions)) (CC and) (NP (NN volume))) (VP (MD can) (VP (VB be) (VP (VBN derived)))) (. .)))
Within this empty pyramidal shape, angles, dimensions and volume can be derived.
(ROOT (S (NP (NP (DT The) (NN volume)) (PP (IN of) (NP (DT a) (ADJP (ADVP (RB regularly)) (JJ shaped)) (JJ solid)))) (VP (MD can) (VP (VB be) (VP (VBN calculated) (PP (IN from) (NP (PRP$ its) (NNS dimensions)))))) (. .)))