( ( ( ( Explain ( how ( ( an ( atomic nucleus ) ) ( can ( ( be stable ) ( if ( it ( is ( composed ( of ( ( particles ( that ( ( are either ) neutral ) ) ) ( -LRB- ( neutrons -RRB- ) ) ) ) ) ) ) ) ) ) ) ) ) or ) ( carry ( like ( charges ( -LRB- ( protons -RRB- ) ) ) ) ) ) . )
(ROOT (S (VP (VP (VB Explain) (SBAR (WHADVP (WRB how)) (S (NP (DT an) (JJ atomic) (NN nucleus)) (VP (MD can) (VP (VB be) (ADJP (JJ stable)) (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (NNS particles)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (DT either) (ADJP (JJ neutral))))) (PRN (-LRB- -LRB-) (NP (NNS neutrons)) (-RRB- -RRB-))))))))))))) (CC or) (VP (VB carry) (PP (IN like) (NP (NP (NNS charges)) (PRN (-LRB- -LRB-) (NP (NNS protons)) (-RRB- -RRB-)))))) (. .)))
Explain how an atomic nucleus can be stable if it is composed of particles that are either neutral (neutrons) or carry like charges (  protons).
(ROOT (S (NP (NP (NNP Nuclei)) (PP (IN with) (NP (NP (RB even) (NNS numbers)) (PP (IN of) (NP (NP (NNS protons)) (, ,) (NP (NNS neutrons)) (, ,) (CC or) (NP (DT both))))))) (VP (VBP are) (ADJP (RBR more) (JJ likely) (S (VP (TO to) (VP (VB be) (ADJP (JJ stable))))))) (. .)))