( ( Neutrons ( ( A particle ) ( in ( ( the nucleus ) ( of ( ( an atom ) ( having ( no charge ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Neutrons) (NP (NP (DT A) (NN particle)) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (NP (DT an) (NN atom)) (VP (VBG having) (NP (DT no) (NN charge))))))))) (. .)))
Neutrons A particle in the nucleus of an atom having no charge.
(ROOT (S (NP (NP (DT The) (NN atom)) (PP (IN in) (NP (DT a) (NN neutron)))) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (DT the) (DT the) (NN nucleus))))) (. .)))