(S (S (NP (DT Some) (NN even)) (VP (VB suggest) (SBAR (IN that) (S (NP (BASENP (NNP Fawkes) (POS ')) (BASENP (JJ failed) (NN attack))) (VP (VP (VBZ is) (RB not)) (NP (NN something) (S (VP (TO to) (VP (VB commemorate) (ADVP (IN at) (DT all))))))))))) (PERIOD .))