( ( ( ( ( Neutrons ( have ( a ( neutral charge ) ) ) ) , ) but ) ( ( ( their impact ) ( on ( the world ) ) ) ( should ( continue ( to ( be positive ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Neutrons)) (VP (VBP have) (NP (DT a) (JJ neutral) (NN charge)))) (, ,) (CC but) (S (NP (NP (PRP$ their) (NN impact)) (PP (IN on) (NP (DT the) (NN world)))) (VP (MD should) (VP (VB continue) (S (VP (TO to) (VP (VB be) (ADJP (JJ positive)))))))) (. .)))
Neutrons have a neutral charge, but their impact on the world should continue to be positive.
(ROOT (S (NP (DT A) (NN neutron)) (VP (VBZ has) (NP (ADJP (JJ neutral) (CC or) (DT no)) (NN charge))) (. .)))