( ( Supernovae neutron ) ( ( ( stars and ) pulsars ) . ) )
(ROOT (S (NP (JJ Supernovae) (NN neutron)) (VP (VP (VBZ stars)) (CC and) (VP (VBZ pulsars))) (. .)))
Supernovae neutron stars and pulsars.
(ROOT (S (NP (NN Neutron) (NNS stars)) (VP (VBP are) (NP (NP (DT the) (NNS corpses)) (PP (IN of) (NP (ADJP (VBN left) (RP over)) (NN supernova) (NNS explosions))))) (. .)))