( ( The electrons ) ( ( move ( ( ( around ( the nucleus ) ) ( as if ) ) ( in orbit ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS electrons)) (VP (VBP move) (PP (PP (IN around) (NP (DT the) (NN nucleus))) (CONJP (RB as) (IN if)) (PP (IN in) (NP (NN orbit))))) (. .)))
The electrons move around the nucleus as if in orbit.
(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)))))))))) (. .)))