(S (S (BASENP (NN Uranium)) (VP (VBZ is) (NP (BASENP (DT a) (JJ chemical) (NN element)) (SBAR (WHNP (WDT which)) (S (VP (MD can) (VP (VB be) (VP (VBN used) (PP (IN in) (NP (BASENP (JJ nuclear) (NNS weapons)) (CC and) (BASENP (JJ nuclear) (NN power) (NNS plants)))))))))))) (PERIOD .))