( ( Nucleus ( ( The ( ( very high ) ( density ( central part ) ) ) ) ( of ( ( an atom ) ( consisting ( of ( ( protons and ) neutrons ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Nucleus) (NP (NP (DT The) (ADJP (RB very) (JJ high)) (NN density) (JJ central) (NN part)) (PP (IN of) (NP (NP (DT an) (NN atom)) (VP (VBG consisting) (PP (IN of) (NP (NNS protons) (CC and) (NNS neutrons)))))))) (. .)))
Nucleus The very high density central part of an atom consisting of protons and neutrons .
(ROOT (S (NP (NNS Protons) (CC and) (NNS neutrons)) (VP (VBP are) (VP (VBN located) (PP (IN in) (NP (DT the) (JJ central) (NN nucleus))))) (. .)))