(S (S (BASENP (NNP Deputy) (NNP Assistant) (NNP Police) (NNP Commissioner) (NNP Peter) (NNP Clarke)) (VP (VBD said) (SBAR (S (BASENP (EX there)) (VP (MD could) (VP (VB have) (VP (VBN been) (QT (DQL ``) (NP (BASENP (JJ significant) (NN injury)) (CC or) (NP (BASENP (NN loss)) (PP (IN of) (BASENP (NN life))))) (DQR ''))))))))) (PERIOD .))