(S (NP (BASENP (DT A) (NN reporter)) (PP (IN for) (BASENP (DT the) (NNP Al) (NNP Jazeera) (NN news) (NN agency)))) (VP (VBD remarked) (COLON :) (QT (DQL ``) (QTC (S (BASENP (NNS Officials)) (VP (VBP have) (VP (VBN been) (VP (VBN cited) (PP (IN as) (S (VP (VBG saying) (SBAR (IN that) (S (BASENP (DT the) (NN incident)) (VP (MD may) (VP (VB have) (VP (VBN been) (VP (VBN caused) (PP (IN by) (NP (BASENP (NNS pyrotechnics)) (SBAR (WHNP (WDT that)) (S (VP (VBD caused) (NP (BASENP (DT an) (NN explosion)) (VP (VBG leading) (PP (TO to) (NP (BASENP (DT a) (JJ significant) (NN loss)) (PP (IN of) (BASENP (NN life))))))))))))))))))))))))) (PERIOD .)) (DQR ''))))