(S (S (SBAR (WHADVP (WRB When)) (S (BASENP (NN police)) (VP (VBD arrived) (PP (IN on) (BASENP (NN scene)))))) (COMMA ,) (S (S (BASENP (PRP they)) (VP (VBD evacuated) (NP (NP (BASENP (DT the) (NNS offices)) (PP (IN at) (BASENP (NN 570)))) (CC and) (NP (BASENP (DT the) (NNP New) (NNP York) (NNP State) (NNP Health) (NNP Department) (NN building)) (PP (IN at) (BASENP (NN 584) (NNP Delaware) (NNP Avenue))))))) (COMMA ,) (SBAR (IN while) (S (BASENP (DT the) (NNP Erie) (NNP County) (NNP Bomb) (NNP Squad)) (VP (VBD was) (VP (VP (VBN called) (PRT (RP in))) (S (VP (TO to) (VP (VB examine) (NP (BASENP (DT the) (NN drop) (NN box)) (CC and) (BASENP (DT the) (NNS packages)))))))))))) (PERIOD .))