( Neutrons ( ( have ( ( ( mass , ) but ) ( no ( electric charge ) ) ) ) . ) )
(ROOT (S (NP (NNS Neutrons)) (VP (VBP have) (NP (NP (NN mass)) (, ,) (CC but) (NP (DT no) (JJ electric) (NN charge)))) (. .)))
Neutrons have mass, but no electric charge.
(ROOT (S (NP (DT A) (NN neutron)) (VP (VBZ has) (NP (ADJP (JJ neutral) (CC or) (DT no)) (NN charge))) (. .)))