( ( Stable isotope ) ( ( is ( called ( ( the ( `` ( daughter '' ) ) ) ( ( formed ( from ( decay ( of ( radioactive ( `` ( parent '' ) ) ) ) ) ) ) ( Why ( ( Radiometric ( Dating ( Works Radioisotopes ) ) ) ( are ( trapped ( in ( minerals ( when ( they crystallize ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Stable) (NN isotope)) (VP (VBZ is) (VP (VBN called) (NP (NP (DT the) (`` ``) (NN daughter) ('' '')) (VP (VBN formed) (PP (IN from) (NP (NP (NN decay)) (PP (IN of) (NP (NN radioactive) (`` ``) (NN parent) ('' ''))))) (SBAR (WHADVP (WRB Why)) (S (NP (NNP Radiometric) (NNP Dating) (NNPS Works) (NNP Radioisotopes)) (VP (VBP are) (VP (VBN trapped) (PP (IN in) (NP (NP (NNS minerals)) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBP crystallize)))))))))))))) (. .)))
Stable isotope is called the &quot;daughter&quot; formed from decay of radioactive &quot;parent&quot; Why Radiometric Dating Works Radioisotopes are trapped in minerals when they crystallize.
(ROOT (S (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NNS radioisotopes)) (VP (VBZ is) (NP (NP (DT an) (NN isotope)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ radioactive))))))) (. .)))