( ( ( The electrons ) ( orbiting ( the nucleus ) ) ) ( ( correspond ( to ( ( the planets ) ( orbiting ( the sun ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS electrons)) (VP (VBG orbiting) (NP (DT the) (NN nucleus)))) (VP (VB correspond) (PP (TO to) (NP (NP (DT the) (NNS planets)) (VP (VBG orbiting) (NP (DT the) (NN sun)))))) (. .)))
The electrons orbiting the nucleus correspond to the planets orbiting the sun.
(ROOT (S (NP (NP (DT The) (NN electron)) (VP (VBN released) (PP (IN during) (NP (JJ beta) (NN decay))))) (VP (VBZ is) (RB not) (NP (NP (DT an) (JJ orbital) (NN electron)) (PP (CC but) (NP (NP (DT an) (NN electron)) (SBAR (WHNP (WP$ whose) (NNS origin)) (S (VP (VBD was) (PP (IN in) (NP (DT the) (NN nucleus)))))))))) (. .)))