(S (S (S (BASENP (NN 20) (NNS people)) (VP (VBD had) (S (VP (TO to) (VP (VB evacuate) (BASENP (PRPD their) (NNS homes))))))) (SBAR (IN while) (S (BASENP (DT the) (NN bomb)) (VP (VBD was) (VP (ADVP (RB safely)) (VBN defused)))))) (PERIOD .))