(S (S (S (BASENP (PRPD His) (JJ national) (NN career)) (VP (VBD was) (VP (VBN ended) (PP (IN in) (BASENP (NN 1968)))))) (SBAR (IN after) (S (BASENP (NN family) (NNS commitments)) (VP (VBD forced) (S (BASENP (PRP him)) (VP (TO to) (VP (VB end) (BASENP (PRPD his) (NN career))))))))) (PERIOD .))