(S (S (NP (BASENP (NNS Visitors)) (PP (IN at) (BASENP (DT the) (NN hotel)))) (VP (VBD were) (VP (VBN evacuated) (PP (TO to) (NP (BASENP (DT the) (NN exhibition) (NN hall)) (PP (IN at) (BASENP (NN street) (NN level)))))))) (PERIOD .))