(S (S (S (BASENP (DT No) (NNS suspicions)) (VP (VBD were) (VP (VBN raised)))) (SBAR (IN until) (S (BASENP (NN cleaning) (NNS crews)) (VP (VP (VBD found) (BASENP (DT the) (NN pyrotechnics))) (PP (IN on) (BASENP (DT the) (NN airplane))))))) (PERIOD .))