(S (S (PP (IN In) (BASENP (NN 1998))) (COMMA ,) (S (BASENP (NNP Bentsen)) (VP (VBD suffered) (NP (BASENP (DT a) (JJ small) (NN stroke)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (BASENP (PRP he)) (VP (VBD said) (SBAR (S (VP (VBD was) (VP (VBN caused) (PP (IN by) (NP (BASENP (DT a) (JJ 3-month) (JJ long) (NN trip)) (PP (TO to) (BASENP (NN 15) (JJ different) (NNS nations)))))))))))))))) (PERIOD .))