(S (S (BASENP (NNS Firefighters)) (VP (VP (VBP report) (BASENP (JJ several) (NNS deaths) (CC and) (NNS injuries))) (CONJP (COMMA ,) (CC but)) (VP (ADVP (RB also)) (VP (VBD said) (SBAR (IN that) (S (NP (BASENP (DT the) (NNS fires)) (VP (VBN caused) (PP (IN by) (BASENP (DT the) (NN blast))))) (VP (VBP have) (VP (VBN been) (VP (VBN extinguished)))))))))) (PERIOD .))