( ( Neutron ( A neutron ) ) ( ( is ( ( an ( ( electrically neutral ) particle ) ) ( in ( ( an ( atom 's ) ) nucleus ) ) ) ) . ) )
(ROOT (S (NP (JJ Neutron) (DT A) (NN neutron)) (VP (VBZ is) (NP (NP (DT an) (ADJP (ADVP (RB electrically)) (JJ neutral)) (NN particle)) (PP (IN in) (NP (NP (DT an) (NN atom) (POS 's)) (NN nucleus))))) (. .)))
Neutron A neutron is an electrically neutral particle in an atom's nucleus.
(ROOT (S (NP (NNS Neutrons)) (VP (VBP are) (ADVP (RB electrically)) (ADJP (JJ neutral))) (. .)))