( ( ( Energy ( Radiation ( Radioactive atom ) ) ) ( -LRB- ( ( Stable atom ) -RRB- ) ) ) ( ( Particles ( ( How fast ) ( ( ( an ( isotope decays ) ) ( into ( a ( stable element ) ) ) ) ( depends ( on ( ( the element ) itself ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Energy) (NNP Radiation) (NNP Radioactive) (NNP atom)) (PRN (-LRB- -LRB-) (NP (NNP Stable) (NNP atom)) (-RRB- -RRB-))) (VP (VBZ Particles) (SBAR (WHADJP (WRB How) (JJ fast)) (S (NP (NP (DT an) (JJ isotope) (NNS decays)) (PP (IN into) (NP (DT a) (JJ stable) (NN element)))) (VP (VBZ depends) (PP (IN on) (NP (NP (DT the) (NN element)) (ADVP (PRP itself)))))))) (. .)))
Energy Radiation Radioactive atom (Stable atom) Particles How fast an isotope decays into a stable element depends on the element itself.
(ROOT (S (NP (JJ Radioactive) (NN decay)) (VP (MD can) (VP (VB give) (PRT (RP off)) (NP (NN energy) (CC and) (NNS particles)))) (. .)))