(S (S (NP (PP (IN Of) (NP (BASENP (DT the) (NN 64)) (SBAR (WHNP (WP who)) (S (VP (VBD were) (VP (VBN hospitalised))))))) (COMMA ,) (BASENP (NN three))) (VP (VBP are) (VP (VBN reported) (S (VP (TO to) (VP (VB be) (PP (IN in) (BASENP (JJ critical) (NN condition))))))))) (PERIOD .))