( ( Nucleus ( ( The ( central part ) ) ( of ( ( an atom ) ( that ( contains ( ( ( ( ( protons , ) neutrons ) , ) and ) ( other particles ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Nucleus) (NP (NP (DT The) (JJ central) (NN part)) (PP (IN of) (NP (NP (DT an) (NN atom)) (SBAR (WHNP (WDT that)) (S (VP (VBZ contains) (NP (NP (NNS protons)) (, ,) (NP (NNS neutrons)) (, ,) (CC and) (NP (JJ other) (NNS particles)))))))))) (. .)))
Nucleus The central part of an atom that contains protons, neutrons, and other particles.
(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))))) (. .)))