(S (S (BASENP (DT The) (NN bomb)) (VP (VBD was) (PP (IN inside) (NP (BASENP (DT a) (QT (DQL ``) (NN jiffy) (NN bag) (DQR ''))) (SBAR (WHNP (WDT which)) (S (VP (VBD held) (NP (BASENP (DT the) (NN letter)) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBN contained) (PP (IN inside) (BASENP (DT a) (JJ padded) (NN envelope))))))))))))))) (PERIOD .))