(S (S (PP (VBG According) (PP (TO to) (NP (BASENP (JJ unnamed) (NN police) (NNS officials)) (VP (VBG investigating) (BASENP (DT the) (NN fire)))))) (COMMA ,) (S (NP (QP (ADVP (IN at) (JJS least)) (NP (BASENP (NN 400)) (PP (TO to) (BASENP (NN 450))))) (BASENP (JJ air-to-air) (NNS missiles))) (VP (VBD were) (VP (VP (VBN damaged) (CC or) (VBN destroyed)) (PP (IN in) (BASENP (DT the) (NN fire))))))) (PERIOD .))