(S (S (BASENP (DT The) (NN study)) (VP (ADVP (RB also)) (VP (VBZ reveals) (SBAR (IN that) (S (S (NP (BASENP (DT a) (NN male)) (VP (VBN born) (PP (IN in) (BASENP (DT the) (JJ late) (NN 1870) (POS 's))))) (VP (MD would) (VP (VB have) (VP (VBN had) (NP (BASENP (DT an) (JJ average) (NN life) (NN span)) (PP (IN of) (BASENP (NN 51-years-old)))))))) (CC and) (S (PP (IN in) (BASENP (DT the) (NN 1930) (POS 's))) (S (BASENP (DT the) (JJ average) (NN life) (NN span)) (VP (VBD was) (BASENP (NN 69-years-old)))))))))) (PERIOD .))