(S (S (S (BASENP (PRP He)) (VP (VBD had) (VP (VP (VBN survived) (BASENP (JJ several) (NNS attempts))) (PP (IN on) (BASENP (PRPD his) (NN life)))))) (SBAR (IN since) (S (VP (VBG shifting) (BASENP (PRPD his) (NN allegiance)))))) (PERIOD .))