(S (S (S (NP (BASENP (DT The) (NN confirmation)) (PP (IN of) (BASENP (DT a) (NN bomb)))) (VP (VP (VBD did) (RB not)) (VP (VB come) (PP (IN until) (BASENP (NN 9.17) (NN am)))))) (CONJP (COMMA ,) (CC but)) (S (PP (IN by) (BASENP (DT that) (NN time))) (S (BASENP (DT the) (NN emergency) (NNS services)) (VP (VP (VBD were) (ADVP (RB already))) (PP (IN on) (BASENP (NN scene))))))) (PERIOD .))