(S (S (BASENP (DT These)) (VP (VBP are) (NP (BASENP (DT the) (JJS latest)) (PP (IN in) (NP (NP (BASENP (DT a) (NN series)) (PP (IN of) (NP (BASENP (NNS eruptions)) (PP (IN from) (BASENP (NNP Mount) (NNP Redoubt)))))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD started) (PP (IN on) (BASENP (NNP March) (NN 22))))))))))) (PERIOD .))