( Examples ( ( are ( ( ( particles ( -LRB- ( ( ( ( ( ( alpha , ) beta ) , ) and ) neutrons ) -RRB- ) ) ) and ) ( ( photons ( -LRB- ( gamma -RRB- ) ) ) ( which ( are ( ( emitted ( from ( ( the nucleus ) ( of ( an ( unstable ( ( -LRB- ( i.e. ( , ( radioactive -RRB- ) ) ) ) atom ) ) ) ) ) ) ) ( during ( radioactive decay ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Examples)) (VP (VBP are) (NP (NP (NP (NNS particles)) (PRN (-LRB- -LRB-) (NP (NP (NNP alpha)) (, ,) (NP (NN beta)) (, ,) (CC and) (NP (NNS neutrons))) (-RRB- -RRB-))) (CC and) (NP (NP (NNS photons)) (PRN (-LRB- -LRB-) (NP (NN gamma)) (-RRB- -RRB-)) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBN emitted) (PP (IN from) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT an) (JJ unstable) (PRN (-LRB- -LRB-) (FW i.e.) (, ,) (ADJP (JJ radioactive)) (-RRB- -RRB-)) (NN atom))))) (PP (IN during) (NP (JJ radioactive) (NN decay)))))))))) (. .)))
Examples are particles (alpha, beta, and neutrons) and photons (gamma) which are emitted from the nucleus of an unstable (i.e., radioactive) atom during radioactive decay.
(ROOT (S (NP (NN Beta) (NN decay)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT an) (JJ unstable) (NN nucleus)) (VP (VBZ emits) (NP (NP (DT a) (JJ beta) (NN particle)) (CC and) (NP (NN energy))))))) (. .)))